257666520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{443}}^1$

素因数の和:625

約数の個数: 128

約数和(自身を含む): 801757440

約数和(自身を除く): 544090920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 131, 148, 185, 222, 262, 296, 370, 393, 443, 444, 524, 555, 655, 740, 786, 886, 888, 1048, 1110, 1310, 1329, 1480, 1572, 1772, 1965, 2215, 2220, 2620, 2658, 3144, 3544, 3930, 4430, 4440, 4847, 5240, 5316, 6645, 7860, 8860, 9694, 10632, 13290, 14541, 15720, 16391, 17720, 19388, 24235, 26580, 29082, 32782, 38776, 48470, 49173, 53160, 58033, 58164, 65564, 72705, 81955, 96940, 98346, 116066, 116328, 131128, 145410, 163910, 174099, 193880, 196692, 232132, 245865, 290165, 290820, 327820, 348198, 393384, 464264, 491730, 580330, 581640, 655640, 696396, 870495, 983460, 1160660, 1392792, 1740990, 1966920, 2147221, 2321320, 3481980, 4294442, 6441663, 6963960, 8588884, 10736105, 12883326, 17177768, 21472210, 25766652, 32208315, 42944420, 51533304, 64416630, 85888840, 128833260, 257666520]

約数ペア:

[(1, 257666520), (2, 128833260), (3, 85888840), (4, 64416630), (5, 51533304), (6, 42944420), (8, 32208315), (10, 25766652), (12, 21472210), (15, 17177768), (20, 12883326), (24, 10736105), (30, 8588884), (37, 6963960), (40, 6441663), (60, 4294442), (74, 3481980), (111, 2321320), (120, 2147221), (131, 1966920), (148, 1740990), (185, 1392792), (222, 1160660), (262, 983460), (296, 870495), (370, 696396), (393, 655640), (443, 581640), (444, 580330), (524, 491730), (555, 464264), (655, 393384), (740, 348198), (786, 327820), (886, 290820), (888, 290165), (1048, 245865), (1110, 232132), (1310, 196692), (1329, 193880), (1480, 174099), (1572, 163910), (1772, 145410), (1965, 131128), (2215, 116328), (2220, 116066), (2620, 98346), (2658, 96940), (3144, 81955), (3544, 72705), (3930, 65564), (4430, 58164), (4440, 58033), (4847, 53160), (5240, 49173), (5316, 48470), (6645, 38776), (7860, 32782), (8860, 29082), (9694, 26580), (10632, 24235), (13290, 19388), (14541, 17720), (15720, 16391)]