21596406

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 48964608

約数和(自身を除く): 27368202

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 47, 78, 86, 94, 129, 137, 141, 258, 274, 282, 411, 559, 611, 822, 1118, 1222, 1677, 1781, 1833, 2021, 3354, 3562, 3666, 4042, 5343, 5891, 6063, 6439, 10686, 11782, 12126, 12878, 17673, 19317, 26273, 35346, 38634, 52546, 76583, 78819, 83707, 153166, 157638, 167414, 229749, 251121, 276877, 459498, 502242, 553754, 830631, 1661262, 3599401, 7198802, 10798203, 21596406]

約数ペア:

[(1, 21596406), (2, 10798203), (3, 7198802), (6, 3599401), (13, 1661262), (26, 830631), (39, 553754), (43, 502242), (47, 459498), (78, 276877), (86, 251121), (94, 229749), (129, 167414), (137, 157638), (141, 153166), (258, 83707), (274, 78819), (282, 76583), (411, 52546), (559, 38634), (611, 35346), (822, 26273), (1118, 19317), (1222, 17673), (1677, 12878), (1781, 12126), (1833, 11782), (2021, 10686), (3354, 6439), (3562, 6063), (3666, 5891), (4042, 5343)]