21232120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:357

約数の個数: 128

約数和(自身を含む): 62092800

約数和(自身を除く): 40860680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 91, 95, 104, 130, 133, 140, 152, 182, 190, 247, 260, 266, 280, 307, 364, 380, 455, 494, 520, 532, 614, 665, 728, 760, 910, 988, 1064, 1228, 1235, 1330, 1535, 1729, 1820, 1976, 2149, 2456, 2470, 2660, 3070, 3458, 3640, 3991, 4298, 4940, 5320, 5833, 6140, 6916, 7982, 8596, 8645, 9880, 10745, 11666, 12280, 13832, 15964, 17192, 17290, 19955, 21490, 23332, 27937, 29165, 31928, 34580, 39910, 40831, 42980, 46664, 55874, 58330, 69160, 75829, 79820, 81662, 85960, 111748, 116660, 139685, 151658, 159640, 163324, 204155, 223496, 233320, 279370, 303316, 326648, 379145, 408310, 530803, 558740, 606632, 758290, 816620, 1061606, 1117480, 1516580, 1633240, 2123212, 2654015, 3033160, 4246424, 5308030, 10616060, 21232120]

約数ペア:

[(1, 21232120), (2, 10616060), (4, 5308030), (5, 4246424), (7, 3033160), (8, 2654015), (10, 2123212), (13, 1633240), (14, 1516580), (19, 1117480), (20, 1061606), (26, 816620), (28, 758290), (35, 606632), (38, 558740), (40, 530803), (52, 408310), (56, 379145), (65, 326648), (70, 303316), (76, 279370), (91, 233320), (95, 223496), (104, 204155), (130, 163324), (133, 159640), (140, 151658), (152, 139685), (182, 116660), (190, 111748), (247, 85960), (260, 81662), (266, 79820), (280, 75829), (307, 69160), (364, 58330), (380, 55874), (455, 46664), (494, 42980), (520, 40831), (532, 39910), (614, 34580), (665, 31928), (728, 29165), (760, 27937), (910, 23332), (988, 21490), (1064, 19955), (1228, 17290), (1235, 17192), (1330, 15964), (1535, 13832), (1729, 12280), (1820, 11666), (1976, 10745), (2149, 9880), (2456, 8645), (2470, 8596), (2660, 7982), (3070, 6916), (3458, 6140), (3640, 5833), (3991, 5320), (4298, 4940)]