21488520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{541}}^1$

素因数の和:886

約数の個数: 64

約数和(自身を含む): 64779840

約数和(自身を除く): 43291320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 331, 541, 662, 993, 1082, 1324, 1623, 1655, 1986, 2164, 2648, 2705, 3246, 3310, 3972, 4328, 4965, 5410, 6492, 6620, 7944, 8115, 9930, 10820, 12984, 13240, 16230, 19860, 21640, 32460, 39720, 64920, 179071, 358142, 537213, 716284, 895355, 1074426, 1432568, 1790710, 2148852, 2686065, 3581420, 4297704, 5372130, 7162840, 10744260, 21488520]

約数ペア:

[(1, 21488520), (2, 10744260), (3, 7162840), (4, 5372130), (5, 4297704), (6, 3581420), (8, 2686065), (10, 2148852), (12, 1790710), (15, 1432568), (20, 1074426), (24, 895355), (30, 716284), (40, 537213), (60, 358142), (120, 179071), (331, 64920), (541, 39720), (662, 32460), (993, 21640), (1082, 19860), (1324, 16230), (1623, 13240), (1655, 12984), (1986, 10820), (2164, 9930), (2648, 8115), (2705, 7944), (3246, 6620), (3310, 6492), (3972, 5410), (4328, 4965)]