161720820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:519

約数の個数: 192

約数和(自身を含む): 544320000

約数和(自身を除く): 382599180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 29, 30, 36, 45, 46, 54, 58, 60, 69, 87, 90, 92, 108, 115, 116, 135, 138, 145, 174, 180, 207, 230, 261, 270, 276, 290, 345, 348, 414, 435, 449, 460, 522, 540, 580, 621, 667, 690, 783, 828, 870, 898, 1035, 1044, 1242, 1305, 1334, 1347, 1380, 1566, 1740, 1796, 2001, 2070, 2245, 2484, 2610, 2668, 2694, 3105, 3132, 3335, 3915, 4002, 4041, 4140, 4490, 5220, 5388, 6003, 6210, 6670, 6735, 7830, 8004, 8082, 8980, 10005, 10327, 12006, 12123, 12420, 13021, 13340, 13470, 15660, 16164, 18009, 20010, 20205, 20654, 24012, 24246, 26042, 26940, 30015, 30981, 36018, 39063, 40020, 40410, 41308, 48492, 51635, 52084, 60030, 60615, 61962, 65105, 72036, 78126, 80820, 90045, 92943, 103270, 117189, 120060, 121230, 123924, 130210, 154905, 156252, 180090, 185886, 195315, 206540, 234378, 242460, 260420, 278829, 299483, 309810, 351567, 360180, 371772, 390630, 464715, 468756, 557658, 585945, 598966, 619620, 703134, 781260, 898449, 929430, 1115316, 1171890, 1197932, 1394145, 1406268, 1497415, 1757835, 1796898, 1858860, 2343780, 2695347, 2788290, 2994830, 3515670, 3593796, 4492245, 5390694, 5576580, 5989660, 7031340, 8086041, 8984490, 10781388, 13476735, 16172082, 17968980, 26953470, 32344164, 40430205, 53906940, 80860410, 161720820]

約数ペア:

[(1, 161720820), (2, 80860410), (3, 53906940), (4, 40430205), (5, 32344164), (6, 26953470), (9, 17968980), (10, 16172082), (12, 13476735), (15, 10781388), (18, 8984490), (20, 8086041), (23, 7031340), (27, 5989660), (29, 5576580), (30, 5390694), (36, 4492245), (45, 3593796), (46, 3515670), (54, 2994830), (58, 2788290), (60, 2695347), (69, 2343780), (87, 1858860), (90, 1796898), (92, 1757835), (108, 1497415), (115, 1406268), (116, 1394145), (135, 1197932), (138, 1171890), (145, 1115316), (174, 929430), (180, 898449), (207, 781260), (230, 703134), (261, 619620), (270, 598966), (276, 585945), (290, 557658), (345, 468756), (348, 464715), (414, 390630), (435, 371772), (449, 360180), (460, 351567), (522, 309810), (540, 299483), (580, 278829), (621, 260420), (667, 242460), (690, 234378), (783, 206540), (828, 195315), (870, 185886), (898, 180090), (1035, 156252), (1044, 154905), (1242, 130210), (1305, 123924), (1334, 121230), (1347, 120060), (1380, 117189), (1566, 103270), (1740, 92943), (1796, 90045), (2001, 80820), (2070, 78126), (2245, 72036), (2484, 65105), (2610, 61962), (2668, 60615), (2694, 60030), (3105, 52084), (3132, 51635), (3335, 48492), (3915, 41308), (4002, 40410), (4041, 40020), (4140, 39063), (4490, 36018), (5220, 30981), (5388, 30015), (6003, 26940), (6210, 26042), (6670, 24246), (6735, 24012), (7830, 20654), (8004, 20205), (8082, 20010), (8980, 18009), (10005, 16164), (10327, 15660), (12006, 13470), (12123, 13340), (12420, 13021)]