21690653012

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{26431}}^1$

素因数の和:26581

約数の個数: 72

約数和(自身を含む): 45560309760

約数和(自身を除く): 23869656748

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 79, 98, 106, 158, 196, 212, 316, 371, 553, 742, 1106, 1484, 2212, 2597, 3871, 4187, 5194, 7742, 8374, 10388, 15484, 16748, 26431, 29309, 52862, 58618, 105724, 117236, 185017, 205163, 370034, 410326, 740068, 820652, 1295119, 1400843, 2088049, 2590238, 2801686, 4176098, 5180476, 5603372, 8352196, 9805901, 14616343, 19611802, 29232686, 39223604, 58465372, 68641307, 102314401, 110666597, 137282614, 204628802, 221333194, 274565228, 409257604, 442666388, 774666179, 1549332358, 3098664716, 5422663253, 10845326506, 21690653012]

約数ペア:

[(1, 21690653012), (2, 10845326506), (4, 5422663253), (7, 3098664716), (14, 1549332358), (28, 774666179), (49, 442666388), (53, 409257604), (79, 274565228), (98, 221333194), (106, 204628802), (158, 137282614), (196, 110666597), (212, 102314401), (316, 68641307), (371, 58465372), (553, 39223604), (742, 29232686), (1106, 19611802), (1484, 14616343), (2212, 9805901), (2597, 8352196), (3871, 5603372), (4187, 5180476), (5194, 4176098), (7742, 2801686), (8374, 2590238), (10388, 2088049), (15484, 1400843), (16748, 1295119), (26431, 820652), (29309, 740068), (52862, 410326), (58618, 370034), (105724, 205163), (117236, 185017)]