21354190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 45904320

約数和(自身を除く): 24550130

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 109, 110, 130, 137, 143, 218, 274, 286, 545, 685, 715, 1090, 1199, 1370, 1417, 1430, 1507, 1781, 2398, 2834, 3014, 3562, 5995, 7085, 7535, 8905, 11990, 14170, 14933, 15070, 15587, 17810, 19591, 29866, 31174, 39182, 74665, 77935, 97955, 149330, 155870, 164263, 194129, 195910, 328526, 388258, 821315, 970645, 1642630, 1941290, 2135419, 4270838, 10677095, 21354190]

約数ペア:

[(1, 21354190), (2, 10677095), (5, 4270838), (10, 2135419), (11, 1941290), (13, 1642630), (22, 970645), (26, 821315), (55, 388258), (65, 328526), (109, 195910), (110, 194129), (130, 164263), (137, 155870), (143, 149330), (218, 97955), (274, 77935), (286, 74665), (545, 39182), (685, 31174), (715, 29866), (1090, 19591), (1199, 17810), (1370, 15587), (1417, 15070), (1430, 14933), (1507, 14170), (1781, 11990), (2398, 8905), (2834, 7535), (3014, 7085), (3562, 5995)]