81607630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 165364416

約数和(自身を除く): 83756786

約数列:

[1, 2, 5, 10, 13, 26, 41, 61, 65, 82, 122, 130, 205, 251, 305, 410, 502, 533, 610, 793, 1066, 1255, 1586, 2501, 2510, 2665, 3263, 3965, 5002, 5330, 6526, 7930, 10291, 12505, 15311, 16315, 20582, 25010, 30622, 32513, 32630, 51455, 65026, 76555, 102910, 133783, 153110, 162565, 199043, 267566, 325130, 398086, 627751, 668915, 995215, 1255502, 1337830, 1990430, 3138755, 6277510, 8160763, 16321526, 40803815, 81607630]

約数ペア:

[(1, 81607630), (2, 40803815), (5, 16321526), (10, 8160763), (13, 6277510), (26, 3138755), (41, 1990430), (61, 1337830), (65, 1255502), (82, 995215), (122, 668915), (130, 627751), (205, 398086), (251, 325130), (305, 267566), (410, 199043), (502, 162565), (533, 153110), (610, 133783), (793, 102910), (1066, 76555), (1255, 65026), (1586, 51455), (2501, 32630), (2510, 32513), (2665, 30622), (3263, 25010), (3965, 20582), (5002, 16315), (5330, 15311), (6526, 12505), (7930, 10291)]