20153980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{569}}^1$

素因数の和:619

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 35003780

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 28, 35, 44, 46, 55, 70, 77, 92, 110, 115, 140, 154, 161, 220, 230, 253, 308, 322, 385, 460, 506, 569, 644, 770, 805, 1012, 1138, 1265, 1540, 1610, 1771, 2276, 2530, 2845, 3220, 3542, 3983, 5060, 5690, 6259, 7084, 7966, 8855, 11380, 12518, 13087, 15932, 17710, 19915, 25036, 26174, 31295, 35420, 39830, 43813, 52348, 62590, 65435, 79660, 87626, 91609, 125180, 130870, 143957, 175252, 183218, 219065, 261740, 287914, 366436, 438130, 458045, 575828, 719785, 876260, 916090, 1007699, 1439570, 1832180, 2015398, 2879140, 4030796, 5038495, 10076990, 20153980]

約数ペア:

[(1, 20153980), (2, 10076990), (4, 5038495), (5, 4030796), (7, 2879140), (10, 2015398), (11, 1832180), (14, 1439570), (20, 1007699), (22, 916090), (23, 876260), (28, 719785), (35, 575828), (44, 458045), (46, 438130), (55, 366436), (70, 287914), (77, 261740), (92, 219065), (110, 183218), (115, 175252), (140, 143957), (154, 130870), (161, 125180), (220, 91609), (230, 87626), (253, 79660), (308, 65435), (322, 62590), (385, 52348), (460, 43813), (506, 39830), (569, 35420), (644, 31295), (770, 26174), (805, 25036), (1012, 19915), (1138, 17710), (1265, 15932), (1540, 13087), (1610, 12518), (1771, 11380), (2276, 8855), (2530, 7966), (2845, 7084), (3220, 6259), (3542, 5690), (3983, 5060)]