20978754

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1$

素因数の和:183

約数の個数: 48

約数和(自身を含む): 45068544

約数和(自身を除く): 24089790

約数列:

[1, 2, 3, 6, 31, 43, 61, 62, 86, 93, 122, 129, 183, 186, 258, 366, 1333, 1849, 1891, 2623, 2666, 3698, 3782, 3999, 5246, 5547, 5673, 7869, 7998, 11094, 11346, 15738, 57319, 81313, 112789, 114638, 162626, 171957, 225578, 243939, 338367, 343914, 487878, 676734, 3496459, 6992918, 10489377, 20978754]

約数ペア:

[(1, 20978754), (2, 10489377), (3, 6992918), (6, 3496459), (31, 676734), (43, 487878), (61, 343914), (62, 338367), (86, 243939), (93, 225578), (122, 171957), (129, 162626), (183, 114638), (186, 112789), (258, 81313), (366, 57319), (1333, 15738), (1849, 11346), (1891, 11094), (2623, 7998), (2666, 7869), (3698, 5673), (3782, 5547), (3999, 5246)]