21250892

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 42735840

約数和(自身を除く): 21484948

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 137, 157, 247, 274, 314, 494, 548, 628, 988, 1781, 2041, 2603, 2983, 3562, 4082, 5206, 5966, 7124, 8164, 10412, 11932, 21509, 33839, 38779, 43018, 67678, 77558, 86036, 135356, 155116, 279617, 408671, 559234, 817342, 1118468, 1634684, 5312723, 10625446, 21250892]

約数ペア:

[(1, 21250892), (2, 10625446), (4, 5312723), (13, 1634684), (19, 1118468), (26, 817342), (38, 559234), (52, 408671), (76, 279617), (137, 155116), (157, 135356), (247, 86036), (274, 77558), (314, 67678), (494, 43018), (548, 38779), (628, 33839), (988, 21509), (1781, 11932), (2041, 10412), (2603, 8164), (2983, 7124), (3562, 5966), (4082, 5206)]