20554860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:343

約数の個数: 96

約数和(自身を含む): 61028352

約数和(自身を除く): 40473492

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 43, 60, 62, 86, 93, 124, 129, 155, 172, 186, 215, 257, 258, 310, 372, 430, 465, 514, 516, 620, 645, 771, 860, 930, 1028, 1285, 1290, 1333, 1542, 1860, 2570, 2580, 2666, 3084, 3855, 3999, 5140, 5332, 6665, 7710, 7967, 7998, 11051, 13330, 15420, 15934, 15996, 19995, 22102, 23901, 26660, 31868, 33153, 39835, 39990, 44204, 47802, 55255, 66306, 79670, 79980, 95604, 110510, 119505, 132612, 159340, 165765, 221020, 239010, 331530, 342581, 478020, 663060, 685162, 1027743, 1370324, 1712905, 2055486, 3425810, 4110972, 5138715, 6851620, 10277430, 20554860]

約数ペア:

[(1, 20554860), (2, 10277430), (3, 6851620), (4, 5138715), (5, 4110972), (6, 3425810), (10, 2055486), (12, 1712905), (15, 1370324), (20, 1027743), (30, 685162), (31, 663060), (43, 478020), (60, 342581), (62, 331530), (86, 239010), (93, 221020), (124, 165765), (129, 159340), (155, 132612), (172, 119505), (186, 110510), (215, 95604), (257, 79980), (258, 79670), (310, 66306), (372, 55255), (430, 47802), (465, 44204), (514, 39990), (516, 39835), (620, 33153), (645, 31868), (771, 26660), (860, 23901), (930, 22102), (1028, 19995), (1285, 15996), (1290, 15934), (1333, 15420), (1542, 13330), (1860, 11051), (2570, 7998), (2580, 7967), (2666, 7710), (3084, 6665), (3855, 5332), (3999, 5140)]