639840

素因数分解:

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

素因数の和:92

約数の個数: 96

約数和(自身を含む): 2128896

約数和(自身を除く): 1489056

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 43, 48, 60, 62, 80, 86, 93, 96, 120, 124, 129, 155, 160, 172, 186, 215, 240, 248, 258, 310, 344, 372, 430, 465, 480, 496, 516, 620, 645, 688, 744, 860, 930, 992, 1032, 1240, 1290, 1333, 1376, 1488, 1720, 1860, 2064, 2480, 2580, 2666, 2976, 3440, 3720, 3999, 4128, 4960, 5160, 5332, 6665, 6880, 7440, 7998, 10320, 10664, 13330, 14880, 15996, 19995, 20640, 21328, 26660, 31992, 39990, 42656, 53320, 63984, 79980, 106640, 127968, 159960, 213280, 319920, 639840]

約数ペア:

[(1, 639840), (2, 319920), (3, 213280), (4, 159960), (5, 127968), (6, 106640), (8, 79980), (10, 63984), (12, 53320), (15, 42656), (16, 39990), (20, 31992), (24, 26660), (30, 21328), (31, 20640), (32, 19995), (40, 15996), (43, 14880), (48, 13330), (60, 10664), (62, 10320), (80, 7998), (86, 7440), (93, 6880), (96, 6665), (120, 5332), (124, 5160), (129, 4960), (155, 4128), (160, 3999), (172, 3720), (186, 3440), (215, 2976), (240, 2666), (248, 2580), (258, 2480), (310, 2064), (344, 1860), (372, 1720), (430, 1488), (465, 1376), (480, 1333), (496, 1290), (516, 1240), (620, 1032), (645, 992), (688, 930), (744, 860)]