20416080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{331}}^1$

素因数の和:604

約数の個数: 80

約数和(自身を含む): 63728064

約数和(自身を除く): 43311984

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 257, 331, 514, 662, 771, 993, 1028, 1285, 1324, 1542, 1655, 1986, 2056, 2570, 2648, 3084, 3310, 3855, 3972, 4112, 4965, 5140, 5296, 6168, 6620, 7710, 7944, 9930, 10280, 12336, 13240, 15420, 15888, 19860, 20560, 26480, 30840, 39720, 61680, 79440, 85067, 170134, 255201, 340268, 425335, 510402, 680536, 850670, 1020804, 1276005, 1361072, 1701340, 2041608, 2552010, 3402680, 4083216, 5104020, 6805360, 10208040, 20416080]

約数ペア:

[(1, 20416080), (2, 10208040), (3, 6805360), (4, 5104020), (5, 4083216), (6, 3402680), (8, 2552010), (10, 2041608), (12, 1701340), (15, 1361072), (16, 1276005), (20, 1020804), (24, 850670), (30, 680536), (40, 510402), (48, 425335), (60, 340268), (80, 255201), (120, 170134), (240, 85067), (257, 79440), (331, 61680), (514, 39720), (662, 30840), (771, 26480), (993, 20560), (1028, 19860), (1285, 15888), (1324, 15420), (1542, 13240), (1655, 12336), (1986, 10280), (2056, 9930), (2570, 7944), (2648, 7710), (3084, 6620), (3310, 6168), (3855, 5296), (3972, 5140), (4112, 4965)]