217324880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{87631}}^1$

素因数の和:87675

約数の個数: 40

約数和(自身を含む): 521585664

約数和(自身を除く): 304260784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 87631, 175262, 350524, 438155, 701048, 876310, 1402096, 1752620, 2716561, 3505240, 5433122, 7010480, 10866244, 13582805, 21732488, 27165610, 43464976, 54331220, 108662440, 217324880]

約数ペア:

[(1, 217324880), (2, 108662440), (4, 54331220), (5, 43464976), (8, 27165610), (10, 21732488), (16, 13582805), (20, 10866244), (31, 7010480), (40, 5433122), (62, 3505240), (80, 2716561), (124, 1752620), (155, 1402096), (248, 876310), (310, 701048), (496, 438155), (620, 350524), (1240, 175262), (2480, 87631)]