19289750

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 20246890

約数列:

[1, 2, 5, 10, 19, 25, 31, 38, 50, 62, 95, 125, 131, 155, 190, 250, 262, 310, 475, 589, 655, 775, 950, 1178, 1310, 1550, 2375, 2489, 2945, 3275, 3875, 4061, 4750, 4978, 5890, 6550, 7750, 8122, 12445, 14725, 16375, 20305, 24890, 29450, 32750, 40610, 62225, 73625, 77159, 101525, 124450, 147250, 154318, 203050, 311125, 385795, 507625, 622250, 771590, 1015250, 1928975, 3857950, 9644875, 19289750]

約数ペア:

[(1, 19289750), (2, 9644875), (5, 3857950), (10, 1928975), (19, 1015250), (25, 771590), (31, 622250), (38, 507625), (50, 385795), (62, 311125), (95, 203050), (125, 154318), (131, 147250), (155, 124450), (190, 101525), (250, 77159), (262, 73625), (310, 62225), (475, 40610), (589, 32750), (655, 29450), (775, 24890), (950, 20305), (1178, 16375), (1310, 14725), (1550, 12445), (2375, 8122), (2489, 7750), (2945, 6550), (3275, 5890), (3875, 4978), (4061, 4750)]