20999640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1699}}^1$

素因数の和:1816

約数の個数: 64

約数和(自身を含む): 63648000

約数和(自身を除く): 42648360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 103, 120, 206, 309, 412, 515, 618, 824, 1030, 1236, 1545, 1699, 2060, 2472, 3090, 3398, 4120, 5097, 6180, 6796, 8495, 10194, 12360, 13592, 16990, 20388, 25485, 33980, 40776, 50970, 67960, 101940, 174997, 203880, 349994, 524991, 699988, 874985, 1049982, 1399976, 1749970, 2099964, 2624955, 3499940, 4199928, 5249910, 6999880, 10499820, 20999640]

約数ペア:

[(1, 20999640), (2, 10499820), (3, 6999880), (4, 5249910), (5, 4199928), (6, 3499940), (8, 2624955), (10, 2099964), (12, 1749970), (15, 1399976), (20, 1049982), (24, 874985), (30, 699988), (40, 524991), (60, 349994), (103, 203880), (120, 174997), (206, 101940), (309, 67960), (412, 50970), (515, 40776), (618, 33980), (824, 25485), (1030, 20388), (1236, 16990), (1545, 13592), (1699, 12360), (2060, 10194), (2472, 8495), (3090, 6796), (3398, 6180), (4120, 5097)]