21000500378

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{347}}^1\times {\mathrm{3469}}^1$

素因数の和:3903

約数の個数: 64

約数和(自身を含む): 37733834880

約数和(自身を除く): 16733334502

約数列:

[1, 2, 11, 13, 22, 26, 61, 122, 143, 286, 347, 671, 694, 793, 1342, 1586, 3469, 3817, 4511, 6938, 7634, 8723, 9022, 17446, 21167, 38159, 42334, 45097, 49621, 76318, 90194, 99242, 211609, 232837, 275171, 423218, 465674, 496067, 550342, 992134, 1203743, 2327699, 2407486, 2750917, 3026881, 4655398, 5501834, 6053762, 13241173, 15648659, 26482346, 30260087, 31297318, 60520174, 73428323, 146856646, 172135249, 344270498, 807711553, 954568199, 1615423106, 1909136398, 10500250189, 21000500378]

約数ペア:

[(1, 21000500378), (2, 10500250189), (11, 1909136398), (13, 1615423106), (22, 954568199), (26, 807711553), (61, 344270498), (122, 172135249), (143, 146856646), (286, 73428323), (347, 60520174), (671, 31297318), (694, 30260087), (793, 26482346), (1342, 15648659), (1586, 13241173), (3469, 6053762), (3817, 5501834), (4511, 4655398), (6938, 3026881), (7634, 2750917), (8723, 2407486), (9022, 2327699), (17446, 1203743), (21167, 992134), (38159, 550342), (42334, 496067), (45097, 465674), (49621, 423218), (76318, 275171), (90194, 232837), (99242, 211609)]