21631365

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1597}}^1$

素因数の和:1658

約数の個数: 48

約数和(自身を含む): 43874688

約数和(自身を除く): 22243323

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 63, 105, 129, 215, 301, 315, 387, 645, 903, 1505, 1597, 1935, 2709, 4515, 4791, 7985, 11179, 13545, 14373, 23955, 33537, 55895, 68671, 71865, 100611, 167685, 206013, 343355, 480697, 503055, 618039, 1030065, 1442091, 2403485, 3090195, 4326273, 7210455, 21631365]

約数ペア:

[(1, 21631365), (3, 7210455), (5, 4326273), (7, 3090195), (9, 2403485), (15, 1442091), (21, 1030065), (35, 618039), (43, 503055), (45, 480697), (63, 343355), (105, 206013), (129, 167685), (215, 100611), (301, 71865), (315, 68671), (387, 55895), (645, 33537), (903, 23955), (1505, 14373), (1597, 13545), (1935, 11179), (2709, 7985), (4515, 4791)]