20994720

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1$

素因数の和:438

約数の個数: 96

約数和(自身を含む): 66769920

約数和(自身を除く): 45775200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 191, 229, 240, 382, 458, 480, 573, 687, 764, 916, 955, 1145, 1146, 1374, 1528, 1832, 1910, 2290, 2292, 2748, 2865, 3056, 3435, 3664, 3820, 4580, 4584, 5496, 5730, 6112, 6870, 7328, 7640, 9160, 9168, 10992, 11460, 13740, 15280, 18320, 18336, 21984, 22920, 27480, 30560, 36640, 43739, 45840, 54960, 87478, 91680, 109920, 131217, 174956, 218695, 262434, 349912, 437390, 524868, 656085, 699824, 874780, 1049736, 1312170, 1399648, 1749560, 2099472, 2624340, 3499120, 4198944, 5248680, 6998240, 10497360, 20994720]

約数ペア:

[(1, 20994720), (2, 10497360), (3, 6998240), (4, 5248680), (5, 4198944), (6, 3499120), (8, 2624340), (10, 2099472), (12, 1749560), (15, 1399648), (16, 1312170), (20, 1049736), (24, 874780), (30, 699824), (32, 656085), (40, 524868), (48, 437390), (60, 349912), (80, 262434), (96, 218695), (120, 174956), (160, 131217), (191, 109920), (229, 91680), (240, 87478), (382, 54960), (458, 45840), (480, 43739), (573, 36640), (687, 30560), (764, 27480), (916, 22920), (955, 21984), (1145, 18336), (1146, 18320), (1374, 15280), (1528, 13740), (1832, 11460), (1910, 10992), (2290, 9168), (2292, 9160), (2748, 7640), (2865, 7328), (3056, 6870), (3435, 6112), (3664, 5730), (3820, 5496), (4580, 4584)]