19891500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:260

約数の個数: 96

約数和(自身を含む): 58968000

約数和(自身を除く): 39076500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 89, 100, 125, 149, 150, 178, 250, 267, 298, 300, 356, 375, 445, 447, 500, 534, 596, 745, 750, 890, 894, 1068, 1335, 1490, 1500, 1780, 1788, 2225, 2235, 2670, 2980, 3725, 4450, 4470, 5340, 6675, 7450, 8900, 8940, 11125, 11175, 13261, 13350, 14900, 18625, 22250, 22350, 26522, 26700, 33375, 37250, 39783, 44500, 44700, 53044, 55875, 66305, 66750, 74500, 79566, 111750, 132610, 133500, 159132, 198915, 223500, 265220, 331525, 397830, 663050, 795660, 994575, 1326100, 1657625, 1989150, 3315250, 3978300, 4972875, 6630500, 9945750, 19891500]

約数ペア:

[(1, 19891500), (2, 9945750), (3, 6630500), (4, 4972875), (5, 3978300), (6, 3315250), (10, 1989150), (12, 1657625), (15, 1326100), (20, 994575), (25, 795660), (30, 663050), (50, 397830), (60, 331525), (75, 265220), (89, 223500), (100, 198915), (125, 159132), (149, 133500), (150, 132610), (178, 111750), (250, 79566), (267, 74500), (298, 66750), (300, 66305), (356, 55875), (375, 53044), (445, 44700), (447, 44500), (500, 39783), (534, 37250), (596, 33375), (745, 26700), (750, 26522), (890, 22350), (894, 22250), (1068, 18625), (1335, 14900), (1490, 13350), (1500, 13261), (1780, 11175), (1788, 11125), (2225, 8940), (2235, 8900), (2670, 7450), (2980, 6675), (3725, 5340), (4450, 4470)]