20349880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 48405600

約数和(自身を除く): 28055720

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 53, 58, 106, 116, 145, 212, 232, 265, 290, 331, 424, 530, 580, 662, 1060, 1160, 1324, 1537, 1655, 2120, 2648, 3074, 3310, 6148, 6620, 7685, 9599, 12296, 13240, 15370, 17543, 19198, 30740, 35086, 38396, 47995, 61480, 70172, 76792, 87715, 95990, 140344, 175430, 191980, 350860, 383960, 508747, 701720, 1017494, 2034988, 2543735, 4069976, 5087470, 10174940, 20349880]

約数ペア:

[(1, 20349880), (2, 10174940), (4, 5087470), (5, 4069976), (8, 2543735), (10, 2034988), (20, 1017494), (29, 701720), (40, 508747), (53, 383960), (58, 350860), (106, 191980), (116, 175430), (145, 140344), (212, 95990), (232, 87715), (265, 76792), (290, 70172), (331, 61480), (424, 47995), (530, 38396), (580, 35086), (662, 30740), (1060, 19198), (1160, 17543), (1324, 15370), (1537, 13240), (1655, 12296), (2120, 9599), (2648, 7685), (3074, 6620), (3310, 6148)]