20903880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10247}}^1$

素因数の和:10278

約数の個数: 64

約数和(自身を含む): 66407040

約数和(自身を除く): 45503160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10247, 20494, 30741, 40988, 51235, 61482, 81976, 102470, 122964, 153705, 174199, 204940, 245928, 307410, 348398, 409880, 522597, 614820, 696796, 870995, 1045194, 1229640, 1393592, 1741990, 2090388, 2612985, 3483980, 4180776, 5225970, 6967960, 10451940, 20903880]

約数ペア:

[(1, 20903880), (2, 10451940), (3, 6967960), (4, 5225970), (5, 4180776), (6, 3483980), (8, 2612985), (10, 2090388), (12, 1741990), (15, 1393592), (17, 1229640), (20, 1045194), (24, 870995), (30, 696796), (34, 614820), (40, 522597), (51, 409880), (60, 348398), (68, 307410), (85, 245928), (102, 204940), (120, 174199), (136, 153705), (170, 122964), (204, 102470), (255, 81976), (340, 61482), (408, 51235), (510, 40988), (680, 30741), (1020, 20494), (2040, 10247)]