20284850

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:635

約数の個数: 48

約数和(自身を含む): 40711680

約数和(自身を除く): 20426830

約数列:

[1, 2, 5, 10, 23, 25, 31, 46, 50, 62, 115, 155, 230, 310, 569, 575, 713, 775, 1138, 1150, 1426, 1550, 2845, 3565, 5690, 7130, 13087, 14225, 17639, 17825, 26174, 28450, 35278, 35650, 65435, 88195, 130870, 176390, 327175, 405697, 440975, 654350, 811394, 881950, 2028485, 4056970, 10142425, 20284850]

約数ペア:

[(1, 20284850), (2, 10142425), (5, 4056970), (10, 2028485), (23, 881950), (25, 811394), (31, 654350), (46, 440975), (50, 405697), (62, 327175), (115, 176390), (155, 130870), (230, 88195), (310, 65435), (569, 35650), (575, 35278), (713, 28450), (775, 26174), (1138, 17825), (1150, 17639), (1426, 14225), (1550, 13087), (2845, 7130), (3565, 5690)]