21333375

素因数分解:

$3^4\times 5^3\times 7^2\times {\mathrm{43}}^1$

素因数の和:84

約数の個数: 120

約数和(自身を含む): 47341008

約数和(自身を除く): 26007633

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 43, 45, 49, 63, 75, 81, 105, 125, 129, 135, 147, 175, 189, 215, 225, 245, 301, 315, 375, 387, 405, 441, 525, 567, 645, 675, 735, 875, 903, 945, 1075, 1125, 1161, 1225, 1323, 1505, 1575, 1935, 2025, 2107, 2205, 2625, 2709, 2835, 3225, 3375, 3483, 3675, 3969, 4515, 4725, 5375, 5805, 6125, 6321, 6615, 7525, 7875, 8127, 9675, 10125, 10535, 11025, 13545, 14175, 16125, 17415, 18375, 18963, 19845, 22575, 23625, 24381, 29025, 31605, 33075, 37625, 40635, 48375, 52675, 55125, 56889, 67725, 70875, 87075, 94815, 99225, 112875, 121905, 145125, 158025, 165375, 170667, 203175, 263375, 284445, 338625, 435375, 474075, 496125, 609525, 790125, 853335, 1015875, 1422225, 2370375, 3047625, 4266675, 7111125, 21333375]

約数ペア:

[(1, 21333375), (3, 7111125), (5, 4266675), (7, 3047625), (9, 2370375), (15, 1422225), (21, 1015875), (25, 853335), (27, 790125), (35, 609525), (43, 496125), (45, 474075), (49, 435375), (63, 338625), (75, 284445), (81, 263375), (105, 203175), (125, 170667), (129, 165375), (135, 158025), (147, 145125), (175, 121905), (189, 112875), (215, 99225), (225, 94815), (245, 87075), (301, 70875), (315, 67725), (375, 56889), (387, 55125), (405, 52675), (441, 48375), (525, 40635), (567, 37625), (645, 33075), (675, 31605), (735, 29025), (875, 24381), (903, 23625), (945, 22575), (1075, 19845), (1125, 18963), (1161, 18375), (1225, 17415), (1323, 16125), (1505, 14175), (1575, 13545), (1935, 11025), (2025, 10535), (2107, 10125), (2205, 9675), (2625, 8127), (2709, 7875), (2835, 7525), (3225, 6615), (3375, 6321), (3483, 6125), (3675, 5805), (3969, 5375), (4515, 4725)]