21261786

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{5563}}^1$

素因数の和:5595

約数の個数: 48

約数和(自身を含む): 53280864

約数和(自身を除く): 32019078

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 546, 637, 1274, 1911, 3822, 5563, 11126, 16689, 33378, 38941, 72319, 77882, 116823, 144638, 216957, 233646, 272587, 433914, 506233, 545174, 817761, 1012466, 1518699, 1635522, 3037398, 3543631, 7087262, 10630893, 21261786]

約数ペア:

[(1, 21261786), (2, 10630893), (3, 7087262), (6, 3543631), (7, 3037398), (13, 1635522), (14, 1518699), (21, 1012466), (26, 817761), (39, 545174), (42, 506233), (49, 433914), (78, 272587), (91, 233646), (98, 216957), (147, 144638), (182, 116823), (273, 77882), (294, 72319), (546, 38941), (637, 33378), (1274, 16689), (1911, 11126), (3822, 5563)]