81777800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:543

約数の個数: 96

約数和(自身を含む): 208111680

約数和(自身を除く): 126333880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 71, 100, 104, 130, 142, 200, 260, 284, 325, 355, 443, 520, 568, 650, 710, 886, 923, 1300, 1420, 1772, 1775, 1846, 2215, 2600, 2840, 3544, 3550, 3692, 4430, 4615, 5759, 7100, 7384, 8860, 9230, 11075, 11518, 14200, 17720, 18460, 22150, 23036, 23075, 28795, 31453, 36920, 44300, 46072, 46150, 57590, 62906, 88600, 92300, 115180, 125812, 143975, 157265, 184600, 230360, 251624, 287950, 314530, 408889, 575900, 629060, 786325, 817778, 1151800, 1258120, 1572650, 1635556, 2044445, 3145300, 3271112, 4088890, 6290600, 8177780, 10222225, 16355560, 20444450, 40888900, 81777800]

約数ペア:

[(1, 81777800), (2, 40888900), (4, 20444450), (5, 16355560), (8, 10222225), (10, 8177780), (13, 6290600), (20, 4088890), (25, 3271112), (26, 3145300), (40, 2044445), (50, 1635556), (52, 1572650), (65, 1258120), (71, 1151800), (100, 817778), (104, 786325), (130, 629060), (142, 575900), (200, 408889), (260, 314530), (284, 287950), (325, 251624), (355, 230360), (443, 184600), (520, 157265), (568, 143975), (650, 125812), (710, 115180), (886, 92300), (923, 88600), (1300, 62906), (1420, 57590), (1772, 46150), (1775, 46072), (1846, 44300), (2215, 36920), (2600, 31453), (2840, 28795), (3544, 23075), (3550, 23036), (3692, 22150), (4430, 18460), (4615, 17720), (5759, 14200), (7100, 11518), (7384, 11075), (8860, 9230)]