28113320

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 65610000

約数和(自身を除く): 37496680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 89, 106, 149, 178, 212, 265, 298, 356, 424, 445, 530, 596, 712, 745, 890, 1060, 1192, 1490, 1780, 2120, 2980, 3560, 4717, 5960, 7897, 9434, 13261, 15794, 18868, 23585, 26522, 31588, 37736, 39485, 47170, 53044, 63176, 66305, 78970, 94340, 106088, 132610, 157940, 188680, 265220, 315880, 530440, 702833, 1405666, 2811332, 3514165, 5622664, 7028330, 14056660, 28113320]

約数ペア:

[(1, 28113320), (2, 14056660), (4, 7028330), (5, 5622664), (8, 3514165), (10, 2811332), (20, 1405666), (40, 702833), (53, 530440), (89, 315880), (106, 265220), (149, 188680), (178, 157940), (212, 132610), (265, 106088), (298, 94340), (356, 78970), (424, 66305), (445, 63176), (530, 53044), (596, 47170), (712, 39485), (745, 37736), (890, 31588), (1060, 26522), (1192, 23585), (1490, 18868), (1780, 15794), (2120, 13261), (2980, 9434), (3560, 7897), (4717, 5960)]