51978420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{229}}^1$

素因数の和:354

約数の個数: 144

約数和(自身を含む): 172295760

約数和(自身を除く): 120317340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 97, 117, 130, 156, 180, 194, 195, 229, 234, 260, 291, 388, 390, 458, 468, 485, 582, 585, 687, 780, 873, 916, 970, 1145, 1164, 1170, 1261, 1374, 1455, 1746, 1940, 2061, 2290, 2340, 2522, 2748, 2910, 2977, 3435, 3492, 3783, 4122, 4365, 4580, 5044, 5820, 5954, 6305, 6870, 7566, 8244, 8730, 8931, 10305, 11349, 11908, 12610, 13740, 14885, 15132, 17460, 17862, 18915, 20610, 22213, 22698, 25220, 26793, 29770, 35724, 37830, 41220, 44426, 44655, 45396, 53586, 56745, 59540, 66639, 75660, 88852, 89310, 107172, 111065, 113490, 133278, 133965, 178620, 199917, 222130, 226980, 266556, 267930, 288769, 333195, 399834, 444260, 535860, 577538, 666390, 799668, 866307, 999585, 1155076, 1332780, 1443845, 1732614, 1999170, 2598921, 2887690, 3465228, 3998340, 4331535, 5197842, 5775380, 8663070, 10395684, 12994605, 17326140, 25989210, 51978420]

約数ペア:

[(1, 51978420), (2, 25989210), (3, 17326140), (4, 12994605), (5, 10395684), (6, 8663070), (9, 5775380), (10, 5197842), (12, 4331535), (13, 3998340), (15, 3465228), (18, 2887690), (20, 2598921), (26, 1999170), (30, 1732614), (36, 1443845), (39, 1332780), (45, 1155076), (52, 999585), (60, 866307), (65, 799668), (78, 666390), (90, 577538), (97, 535860), (117, 444260), (130, 399834), (156, 333195), (180, 288769), (194, 267930), (195, 266556), (229, 226980), (234, 222130), (260, 199917), (291, 178620), (388, 133965), (390, 133278), (458, 113490), (468, 111065), (485, 107172), (582, 89310), (585, 88852), (687, 75660), (780, 66639), (873, 59540), (916, 56745), (970, 53586), (1145, 45396), (1164, 44655), (1170, 44426), (1261, 41220), (1374, 37830), (1455, 35724), (1746, 29770), (1940, 26793), (2061, 25220), (2290, 22698), (2340, 22213), (2522, 20610), (2748, 18915), (2910, 17862), (2977, 17460), (3435, 15132), (3492, 14885), (3783, 13740), (4122, 12610), (4365, 11908), (4580, 11349), (5044, 10305), (5820, 8931), (5954, 8730), (6305, 8244), (6870, 7566)]