21498500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:142

約数の個数: 96

約数和(自身を含む): 51717120

約数和(自身を除く): 30218620

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 73, 76, 95, 100, 124, 125, 146, 155, 190, 250, 292, 310, 365, 380, 475, 500, 589, 620, 730, 775, 950, 1178, 1387, 1460, 1550, 1825, 1900, 2263, 2356, 2375, 2774, 2945, 3100, 3650, 3875, 4526, 4750, 5548, 5890, 6935, 7300, 7750, 9052, 9125, 9500, 11315, 11780, 13870, 14725, 15500, 18250, 22630, 27740, 29450, 34675, 36500, 42997, 45260, 56575, 58900, 69350, 73625, 85994, 113150, 138700, 147250, 171988, 173375, 214985, 226300, 282875, 294500, 346750, 429970, 565750, 693500, 859940, 1074925, 1131500, 2149850, 4299700, 5374625, 10749250, 21498500]

約数ペア:

[(1, 21498500), (2, 10749250), (4, 5374625), (5, 4299700), (10, 2149850), (19, 1131500), (20, 1074925), (25, 859940), (31, 693500), (38, 565750), (50, 429970), (62, 346750), (73, 294500), (76, 282875), (95, 226300), (100, 214985), (124, 173375), (125, 171988), (146, 147250), (155, 138700), (190, 113150), (250, 85994), (292, 73625), (310, 69350), (365, 58900), (380, 56575), (475, 45260), (500, 42997), (589, 36500), (620, 34675), (730, 29450), (775, 27740), (950, 22630), (1178, 18250), (1387, 15500), (1460, 14725), (1550, 13870), (1825, 11780), (1900, 11315), (2263, 9500), (2356, 9125), (2375, 9052), (2774, 7750), (2945, 7300), (3100, 6935), (3650, 5890), (3875, 5548), (4526, 4750)]