320415840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{222511}}^1$

素因数の和:222532

約数の個数: 72

約数和(自身を含む): 1093423968

約数和(自身を除く): 773008128

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 222511, 445022, 667533, 890044, 1112555, 1335066, 1780088, 2002599, 2225110, 2670132, 3337665, 3560176, 4005198, 4450220, 5340264, 6675330, 7120352, 8010396, 8900440, 10012995, 10680528, 13350660, 16020792, 17800880, 20025990, 21361056, 26701320, 32041584, 35601760, 40051980, 53402640, 64083168, 80103960, 106805280, 160207920, 320415840]

約数ペア:

[(1, 320415840), (2, 160207920), (3, 106805280), (4, 80103960), (5, 64083168), (6, 53402640), (8, 40051980), (9, 35601760), (10, 32041584), (12, 26701320), (15, 21361056), (16, 20025990), (18, 17800880), (20, 16020792), (24, 13350660), (30, 10680528), (32, 10012995), (36, 8900440), (40, 8010396), (45, 7120352), (48, 6675330), (60, 5340264), (72, 4450220), (80, 4005198), (90, 3560176), (96, 3337665), (120, 2670132), (144, 2225110), (160, 2002599), (180, 1780088), (240, 1335066), (288, 1112555), (360, 890044), (480, 667533), (720, 445022), (1440, 222511)]