21848240

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3457}}^1$

素因数の和:3549

約数の個数: 40

約数和(自身を含む): 51455040

約数和(自身を除く): 29606800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 3457, 6320, 6914, 13828, 17285, 27656, 34570, 55312, 69140, 138280, 273103, 276560, 546206, 1092412, 1365515, 2184824, 2731030, 4369648, 5462060, 10924120, 21848240]

約数ペア:

[(1, 21848240), (2, 10924120), (4, 5462060), (5, 4369648), (8, 2731030), (10, 2184824), (16, 1365515), (20, 1092412), (40, 546206), (79, 276560), (80, 273103), (158, 138280), (316, 69140), (395, 55312), (632, 34570), (790, 27656), (1264, 17285), (1580, 13828), (3160, 6914), (3457, 6320)]