20778438

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:277

約数の個数: 48

約数和(自身を含む): 44933616

約数和(自身を除く): 24155178

約数列:

[1, 2, 3, 6, 19, 38, 53, 57, 106, 114, 159, 181, 318, 361, 362, 543, 722, 1007, 1083, 1086, 2014, 2166, 3021, 3439, 6042, 6878, 9593, 10317, 19133, 19186, 20634, 28779, 38266, 57399, 57558, 65341, 114798, 130682, 182267, 196023, 364534, 392046, 546801, 1093602, 3463073, 6926146, 10389219, 20778438]

約数ペア:

[(1, 20778438), (2, 10389219), (3, 6926146), (6, 3463073), (19, 1093602), (38, 546801), (53, 392046), (57, 364534), (106, 196023), (114, 182267), (159, 130682), (181, 114798), (318, 65341), (361, 57558), (362, 57399), (543, 38266), (722, 28779), (1007, 20634), (1083, 19186), (1086, 19133), (2014, 10317), (2166, 9593), (3021, 6878), (3439, 6042)]