20879280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{617}}^1$

素因数の和:683

約数の個数: 120

約数和(自身を含む): 71727552

約数和(自身を除く): 50848272

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 47, 48, 60, 72, 80, 90, 94, 120, 141, 144, 180, 188, 235, 240, 282, 360, 376, 423, 470, 564, 617, 705, 720, 752, 846, 940, 1128, 1234, 1410, 1692, 1851, 1880, 2115, 2256, 2468, 2820, 3085, 3384, 3702, 3760, 4230, 4936, 5553, 5640, 6170, 6768, 7404, 8460, 9255, 9872, 11106, 11280, 12340, 14808, 16920, 18510, 22212, 24680, 27765, 28999, 29616, 33840, 37020, 44424, 49360, 55530, 57998, 74040, 86997, 88848, 111060, 115996, 144995, 148080, 173994, 222120, 231992, 260991, 289990, 347988, 434985, 444240, 463984, 521982, 579980, 695976, 869970, 1043964, 1159960, 1304955, 1391952, 1739940, 2087928, 2319920, 2609910, 3479880, 4175856, 5219820, 6959760, 10439640, 20879280]

約数ペア:

[(1, 20879280), (2, 10439640), (3, 6959760), (4, 5219820), (5, 4175856), (6, 3479880), (8, 2609910), (9, 2319920), (10, 2087928), (12, 1739940), (15, 1391952), (16, 1304955), (18, 1159960), (20, 1043964), (24, 869970), (30, 695976), (36, 579980), (40, 521982), (45, 463984), (47, 444240), (48, 434985), (60, 347988), (72, 289990), (80, 260991), (90, 231992), (94, 222120), (120, 173994), (141, 148080), (144, 144995), (180, 115996), (188, 111060), (235, 88848), (240, 86997), (282, 74040), (360, 57998), (376, 55530), (423, 49360), (470, 44424), (564, 37020), (617, 33840), (705, 29616), (720, 28999), (752, 27765), (846, 24680), (940, 22212), (1128, 18510), (1234, 16920), (1410, 14808), (1692, 12340), (1851, 11280), (1880, 11106), (2115, 9872), (2256, 9255), (2468, 8460), (2820, 7404), (3085, 6768), (3384, 6170), (3702, 5640), (3760, 5553), (4230, 4936)]