51313840

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7207}}^1$

素因数の和:7309

約数の個数: 40

約数和(自身を含む): 120661920

約数和(自身を除く): 69348080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 7207, 14414, 28828, 36035, 57656, 72070, 115312, 144140, 288280, 576560, 641423, 1282846, 2565692, 3207115, 5131384, 6414230, 10262768, 12828460, 25656920, 51313840]

約数ペア:

[(1, 51313840), (2, 25656920), (4, 12828460), (5, 10262768), (8, 6414230), (10, 5131384), (16, 3207115), (20, 2565692), (40, 1282846), (80, 641423), (89, 576560), (178, 288280), (356, 144140), (445, 115312), (712, 72070), (890, 57656), (1424, 36035), (1780, 28828), (3560, 14414), (7120, 7207)]