21113750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:175

約数の個数: 80

約数和(自身を含む): 47984640

約数和(自身を除く): 26870890

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 35, 38, 50, 70, 95, 125, 127, 133, 175, 190, 250, 254, 266, 350, 475, 625, 635, 665, 875, 889, 950, 1250, 1270, 1330, 1750, 1778, 2375, 2413, 3175, 3325, 4375, 4445, 4750, 4826, 6350, 6650, 8750, 8890, 11875, 12065, 15875, 16625, 16891, 22225, 23750, 24130, 31750, 33250, 33782, 44450, 60325, 79375, 83125, 84455, 111125, 120650, 158750, 166250, 168910, 222250, 301625, 422275, 555625, 603250, 844550, 1111250, 1508125, 2111375, 3016250, 4222750, 10556875, 21113750]

約数ペア:

[(1, 21113750), (2, 10556875), (5, 4222750), (7, 3016250), (10, 2111375), (14, 1508125), (19, 1111250), (25, 844550), (35, 603250), (38, 555625), (50, 422275), (70, 301625), (95, 222250), (125, 168910), (127, 166250), (133, 158750), (175, 120650), (190, 111125), (250, 84455), (254, 83125), (266, 79375), (350, 60325), (475, 44450), (625, 33782), (635, 33250), (665, 31750), (875, 24130), (889, 23750), (950, 22225), (1250, 16891), (1270, 16625), (1330, 15875), (1750, 12065), (1778, 11875), (2375, 8890), (2413, 8750), (3175, 6650), (3325, 6350), (4375, 4826), (4445, 4750)]