20964970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 22217750

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 67, 83, 130, 134, 145, 166, 290, 335, 377, 415, 670, 754, 830, 871, 1079, 1742, 1885, 1943, 2158, 2407, 3770, 3886, 4355, 4814, 5395, 5561, 8710, 9715, 10790, 11122, 12035, 19430, 24070, 25259, 27805, 31291, 50518, 55610, 62582, 72293, 126295, 144586, 156455, 161269, 252590, 312910, 322538, 361465, 722930, 806345, 1612690, 2096497, 4192994, 10482485, 20964970]

約数ペア:

[(1, 20964970), (2, 10482485), (5, 4192994), (10, 2096497), (13, 1612690), (26, 806345), (29, 722930), (58, 361465), (65, 322538), (67, 312910), (83, 252590), (130, 161269), (134, 156455), (145, 144586), (166, 126295), (290, 72293), (335, 62582), (377, 55610), (415, 50518), (670, 31291), (754, 27805), (830, 25259), (871, 24070), (1079, 19430), (1742, 12035), (1885, 11122), (1943, 10790), (2158, 9715), (2407, 8710), (3770, 5561), (3886, 5395), (4355, 4814)]