20879460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:322

約数の個数: 144

約数和(自身を含む): 73696896

約数和(自身を除く): 52817436

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 73, 84, 90, 105, 126, 140, 146, 180, 210, 219, 227, 252, 292, 315, 365, 420, 438, 454, 511, 630, 657, 681, 730, 876, 908, 1022, 1095, 1135, 1260, 1314, 1362, 1460, 1533, 1589, 2043, 2044, 2190, 2270, 2555, 2628, 2724, 3066, 3178, 3285, 3405, 4086, 4380, 4540, 4599, 4767, 5110, 6132, 6356, 6570, 6810, 7665, 7945, 8172, 9198, 9534, 10215, 10220, 13140, 13620, 14301, 15330, 15890, 16571, 18396, 19068, 20430, 22995, 23835, 28602, 30660, 31780, 33142, 40860, 45990, 47670, 49713, 57204, 66284, 71505, 82855, 91980, 95340, 99426, 115997, 143010, 149139, 165710, 198852, 231994, 248565, 286020, 298278, 331420, 347991, 463988, 497130, 579985, 596556, 695982, 745695, 994260, 1043973, 1159970, 1391964, 1491390, 1739955, 2087946, 2319940, 2982780, 3479910, 4175892, 5219865, 6959820, 10439730, 20879460]

約数ペア:

[(1, 20879460), (2, 10439730), (3, 6959820), (4, 5219865), (5, 4175892), (6, 3479910), (7, 2982780), (9, 2319940), (10, 2087946), (12, 1739955), (14, 1491390), (15, 1391964), (18, 1159970), (20, 1043973), (21, 994260), (28, 745695), (30, 695982), (35, 596556), (36, 579985), (42, 497130), (45, 463988), (60, 347991), (63, 331420), (70, 298278), (73, 286020), (84, 248565), (90, 231994), (105, 198852), (126, 165710), (140, 149139), (146, 143010), (180, 115997), (210, 99426), (219, 95340), (227, 91980), (252, 82855), (292, 71505), (315, 66284), (365, 57204), (420, 49713), (438, 47670), (454, 45990), (511, 40860), (630, 33142), (657, 31780), (681, 30660), (730, 28602), (876, 23835), (908, 22995), (1022, 20430), (1095, 19068), (1135, 18396), (1260, 16571), (1314, 15890), (1362, 15330), (1460, 14301), (1533, 13620), (1589, 13140), (2043, 10220), (2044, 10215), (2190, 9534), (2270, 9198), (2555, 8172), (2628, 7945), (2724, 7665), (3066, 6810), (3178, 6570), (3285, 6356), (3405, 6132), (4086, 5110), (4380, 4767), (4540, 4599)]