21648750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:299

約数の個数: 80

約数和(自身を含む): 56681856

約数和(自身を除く): 35033106

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 25, 30, 46, 50, 69, 75, 115, 125, 138, 150, 230, 250, 251, 345, 375, 502, 575, 625, 690, 750, 753, 1150, 1250, 1255, 1506, 1725, 1875, 2510, 2875, 3450, 3750, 3765, 5750, 5773, 6275, 7530, 8625, 11546, 12550, 14375, 17250, 17319, 18825, 28750, 28865, 31375, 34638, 37650, 43125, 57730, 62750, 86250, 86595, 94125, 144325, 156875, 173190, 188250, 288650, 313750, 432975, 470625, 721625, 865950, 941250, 1443250, 2164875, 3608125, 4329750, 7216250, 10824375, 21648750]

約数ペア:

[(1, 21648750), (2, 10824375), (3, 7216250), (5, 4329750), (6, 3608125), (10, 2164875), (15, 1443250), (23, 941250), (25, 865950), (30, 721625), (46, 470625), (50, 432975), (69, 313750), (75, 288650), (115, 188250), (125, 173190), (138, 156875), (150, 144325), (230, 94125), (250, 86595), (251, 86250), (345, 62750), (375, 57730), (502, 43125), (575, 37650), (625, 34638), (690, 31375), (750, 28865), (753, 28750), (1150, 18825), (1250, 17319), (1255, 17250), (1506, 14375), (1725, 12550), (1875, 11546), (2510, 8625), (2875, 7530), (3450, 6275), (3750, 5773), (3765, 5750)]