400337240

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{839}}^1$

素因数の和:1080

約数の個数: 64

約数和(自身を含む): 919296000

約数和(自身を除く): 518958760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 151, 158, 302, 316, 395, 604, 632, 755, 790, 839, 1208, 1510, 1580, 1678, 3020, 3160, 3356, 4195, 6040, 6712, 8390, 11929, 16780, 23858, 33560, 47716, 59645, 66281, 95432, 119290, 126689, 132562, 238580, 253378, 265124, 331405, 477160, 506756, 530248, 633445, 662810, 1013512, 1266890, 1325620, 2533780, 2651240, 5067560, 10008431, 20016862, 40033724, 50042155, 80067448, 100084310, 200168620, 400337240]

約数ペア:

[(1, 400337240), (2, 200168620), (4, 100084310), (5, 80067448), (8, 50042155), (10, 40033724), (20, 20016862), (40, 10008431), (79, 5067560), (151, 2651240), (158, 2533780), (302, 1325620), (316, 1266890), (395, 1013512), (604, 662810), (632, 633445), (755, 530248), (790, 506756), (839, 477160), (1208, 331405), (1510, 265124), (1580, 253378), (1678, 238580), (3020, 132562), (3160, 126689), (3356, 119290), (4195, 95432), (6040, 66281), (6712, 59645), (8390, 47716), (11929, 33560), (16780, 23858)]