15691481420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{284369}}^1$

素因数の和:284498

約数の個数: 48

約数和(自身を含む): 34397395200

約数和(自身を除く): 18705913780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 5518, 11036, 13795, 27590, 55180, 284369, 568738, 1137476, 1421845, 2843690, 5687380, 8815439, 17630878, 25308841, 35261756, 44077195, 50617682, 88154390, 101235364, 126544205, 176308780, 253088410, 506176820, 784574071, 1569148142, 3138296284, 3922870355, 7845740710, 15691481420]

約数ペア:

[(1, 15691481420), (2, 7845740710), (4, 3922870355), (5, 3138296284), (10, 1569148142), (20, 784574071), (31, 506176820), (62, 253088410), (89, 176308780), (124, 126544205), (155, 101235364), (178, 88154390), (310, 50617682), (356, 44077195), (445, 35261756), (620, 25308841), (890, 17630878), (1780, 8815439), (2759, 5687380), (5518, 2843690), (11036, 1421845), (13795, 1137476), (27590, 568738), (55180, 284369)]