20951658

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12791}}^1$

素因数の和:12819

約数の個数: 48

約数和(自身を含む): 55875456

約数和(自身を除く): 34923798

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12791, 25582, 38373, 76746, 89537, 115119, 166283, 179074, 230238, 268611, 332566, 498849, 537222, 805833, 997698, 1163981, 1496547, 1611666, 2327962, 2993094, 3491943, 6983886, 10475829, 20951658]

約数ペア:

[(1, 20951658), (2, 10475829), (3, 6983886), (6, 3491943), (7, 2993094), (9, 2327962), (13, 1611666), (14, 1496547), (18, 1163981), (21, 997698), (26, 805833), (39, 537222), (42, 498849), (63, 332566), (78, 268611), (91, 230238), (117, 179074), (126, 166283), (182, 115119), (234, 89537), (273, 76746), (546, 38373), (819, 25582), (1638, 12791)]