21157164

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1423}}^1$

素因数の和:1499

約数の個数: 72

約数和(自身を含む): 62200320

約数和(自身を除く): 41043156

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 59, 63, 84, 118, 126, 177, 236, 252, 354, 413, 531, 708, 826, 1062, 1239, 1423, 1652, 2124, 2478, 2846, 3717, 4269, 4956, 5692, 7434, 8538, 9961, 12807, 14868, 17076, 19922, 25614, 29883, 39844, 51228, 59766, 83957, 89649, 119532, 167914, 179298, 251871, 335828, 358596, 503742, 587699, 755613, 1007484, 1175398, 1511226, 1763097, 2350796, 3022452, 3526194, 5289291, 7052388, 10578582, 21157164]

約数ペア:

[(1, 21157164), (2, 10578582), (3, 7052388), (4, 5289291), (6, 3526194), (7, 3022452), (9, 2350796), (12, 1763097), (14, 1511226), (18, 1175398), (21, 1007484), (28, 755613), (36, 587699), (42, 503742), (59, 358596), (63, 335828), (84, 251871), (118, 179298), (126, 167914), (177, 119532), (236, 89649), (252, 83957), (354, 59766), (413, 51228), (531, 39844), (708, 29883), (826, 25614), (1062, 19922), (1239, 17076), (1423, 14868), (1652, 12807), (2124, 9961), (2478, 8538), (2846, 7434), (3717, 5692), (4269, 4956)]