21990131506

素因数分解:

$2^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{449}}^1\times {\mathrm{7459}}^1$

素因数の和:7991

約数の個数: 48

約数和(自身を含む): 39035196000

約数和(自身を除く): 17045064494

約数列:

[1, 2, 7, 14, 49, 67, 98, 134, 449, 469, 898, 938, 3143, 3283, 6286, 6566, 7459, 14918, 22001, 30083, 44002, 52213, 60166, 104426, 210581, 365491, 421162, 499753, 730982, 999506, 1474067, 2948134, 3349091, 3498271, 6698182, 6996542, 23443637, 24487897, 46887274, 48975794, 164105459, 224389097, 328210918, 448778194, 1570723679, 3141447358, 10995065753, 21990131506]

約数ペア:

[(1, 21990131506), (2, 10995065753), (7, 3141447358), (14, 1570723679), (49, 448778194), (67, 328210918), (98, 224389097), (134, 164105459), (449, 48975794), (469, 46887274), (898, 24487897), (938, 23443637), (3143, 6996542), (3283, 6698182), (6286, 3498271), (6566, 3349091), (7459, 2948134), (14918, 1474067), (22001, 999506), (30083, 730982), (44002, 499753), (52213, 421162), (60166, 365491), (104426, 210581)]