201001520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{81049}}^1$

素因数の和:81093

約数の個数: 40

約数和(自身を含む): 482409600

約数和(自身を除く): 281408080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 81049, 162098, 324196, 405245, 648392, 810490, 1296784, 1620980, 2512519, 3241960, 5025038, 6483920, 10050076, 12562595, 20100152, 25125190, 40200304, 50250380, 100500760, 201001520]

約数ペア:

[(1, 201001520), (2, 100500760), (4, 50250380), (5, 40200304), (8, 25125190), (10, 20100152), (16, 12562595), (20, 10050076), (31, 6483920), (40, 5025038), (62, 3241960), (80, 2512519), (124, 1620980), (155, 1296784), (248, 810490), (310, 648392), (496, 405245), (620, 324196), (1240, 162098), (2480, 81049)]