61219540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 131423040

約数和(自身を除く): 70203500

約数列:

[1, 2, 4, 5, 10, 20, 89, 163, 178, 211, 326, 356, 422, 445, 652, 815, 844, 890, 1055, 1630, 1780, 2110, 3260, 4220, 14507, 18779, 29014, 34393, 37558, 58028, 68786, 72535, 75116, 93895, 137572, 145070, 171965, 187790, 290140, 343930, 375580, 687860, 3060977, 6121954, 12243908, 15304885, 30609770, 61219540]

約数ペア:

[(1, 61219540), (2, 30609770), (4, 15304885), (5, 12243908), (10, 6121954), (20, 3060977), (89, 687860), (163, 375580), (178, 343930), (211, 290140), (326, 187790), (356, 171965), (422, 145070), (445, 137572), (652, 93895), (815, 75116), (844, 72535), (890, 68786), (1055, 58028), (1630, 37558), (1780, 34393), (2110, 29014), (3260, 18779), (4220, 14507)]