21905156780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3571}}^1\times {\mathrm{23593}}^1$

素因数の和:27186

約数の個数: 48

約数和(自身を含む): 49555327584

約数和(自身を除く): 27650170804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 3571, 7142, 14284, 17855, 23593, 35710, 46423, 47186, 71420, 92846, 94372, 117965, 185692, 232115, 235930, 306709, 464230, 471860, 613418, 928460, 1226836, 1533545, 3067090, 6134180, 84250603, 168501206, 337002412, 421253015, 842506030, 1095257839, 1685012060, 2190515678, 4381031356, 5476289195, 10952578390, 21905156780]

約数ペア:

[(1, 21905156780), (2, 10952578390), (4, 5476289195), (5, 4381031356), (10, 2190515678), (13, 1685012060), (20, 1095257839), (26, 842506030), (52, 421253015), (65, 337002412), (130, 168501206), (260, 84250603), (3571, 6134180), (7142, 3067090), (14284, 1533545), (17855, 1226836), (23593, 928460), (35710, 613418), (46423, 471860), (47186, 464230), (71420, 306709), (92846, 235930), (94372, 232115), (117965, 185692)]