28659500

素因数分解:

$2^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{43}}^2$

素因数の和:136

約数の個数: 72

約数和(自身を含む): 66148992

約数和(自身を除く): 37489492

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 43, 50, 62, 86, 100, 124, 125, 155, 172, 215, 250, 310, 430, 500, 620, 775, 860, 1075, 1333, 1550, 1849, 2150, 2666, 3100, 3698, 3875, 4300, 5332, 5375, 6665, 7396, 7750, 9245, 10750, 13330, 15500, 18490, 21500, 26660, 33325, 36980, 46225, 57319, 66650, 92450, 114638, 133300, 166625, 184900, 229276, 231125, 286595, 333250, 462250, 573190, 666500, 924500, 1146380, 1432975, 2865950, 5731900, 7164875, 14329750, 28659500]

約数ペア:

[(1, 28659500), (2, 14329750), (4, 7164875), (5, 5731900), (10, 2865950), (20, 1432975), (25, 1146380), (31, 924500), (43, 666500), (50, 573190), (62, 462250), (86, 333250), (100, 286595), (124, 231125), (125, 229276), (155, 184900), (172, 166625), (215, 133300), (250, 114638), (310, 92450), (430, 66650), (500, 57319), (620, 46225), (775, 36980), (860, 33325), (1075, 26660), (1333, 21500), (1550, 18490), (1849, 15500), (2150, 13330), (2666, 10750), (3100, 9245), (3698, 7750), (3875, 7396), (4300, 6665), (5332, 5375)]