261923740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1433}}^1$

素因数の和:1511

約数の個数: 96

約数和(自身を含む): 640825920

約数和(自身を除く): 378902180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 37, 38, 52, 65, 74, 76, 95, 130, 148, 185, 190, 247, 260, 370, 380, 481, 494, 703, 740, 962, 988, 1235, 1406, 1433, 1924, 2405, 2470, 2812, 2866, 3515, 4810, 4940, 5732, 7030, 7165, 9139, 9620, 14060, 14330, 18278, 18629, 27227, 28660, 36556, 37258, 45695, 53021, 54454, 74516, 91390, 93145, 106042, 108908, 136135, 182780, 186290, 212084, 265105, 272270, 353951, 372580, 530210, 544540, 689273, 707902, 1007399, 1060420, 1378546, 1415804, 1769755, 2014798, 2757092, 3446365, 3539510, 4029596, 5036995, 6892730, 7079020, 10073990, 13096187, 13785460, 20147980, 26192374, 52384748, 65480935, 130961870, 261923740]

約数ペア:

[(1, 261923740), (2, 130961870), (4, 65480935), (5, 52384748), (10, 26192374), (13, 20147980), (19, 13785460), (20, 13096187), (26, 10073990), (37, 7079020), (38, 6892730), (52, 5036995), (65, 4029596), (74, 3539510), (76, 3446365), (95, 2757092), (130, 2014798), (148, 1769755), (185, 1415804), (190, 1378546), (247, 1060420), (260, 1007399), (370, 707902), (380, 689273), (481, 544540), (494, 530210), (703, 372580), (740, 353951), (962, 272270), (988, 265105), (1235, 212084), (1406, 186290), (1433, 182780), (1924, 136135), (2405, 108908), (2470, 106042), (2812, 93145), (2866, 91390), (3515, 74516), (4810, 54454), (4940, 53021), (5732, 45695), (7030, 37258), (7165, 36556), (9139, 28660), (9620, 27227), (14060, 18629), (14330, 18278)]