261647440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{105503}}^1$

素因数の和:105547

約数の個数: 40

約数和(自身を含む): 627959808

約数和(自身を除く): 366312368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 105503, 211006, 422012, 527515, 844024, 1055030, 1688048, 2110060, 3270593, 4220120, 6541186, 8440240, 13082372, 16352965, 26164744, 32705930, 52329488, 65411860, 130823720, 261647440]

約数ペア:

[(1, 261647440), (2, 130823720), (4, 65411860), (5, 52329488), (8, 32705930), (10, 26164744), (16, 16352965), (20, 13082372), (31, 8440240), (40, 6541186), (62, 4220120), (80, 3270593), (124, 2110060), (155, 1688048), (248, 1055030), (310, 844024), (496, 527515), (620, 422012), (1240, 211006), (2480, 105503)]