18438800

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1487}}^1$

素因数の和:1536

約数の個数: 60

約数和(自身を含む): 45758976

約数和(自身を除く): 27320176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1487, 1550, 2480, 2974, 3100, 5948, 6200, 7435, 11896, 12400, 14870, 23792, 29740, 37175, 46097, 59480, 74350, 92194, 118960, 148700, 184388, 230485, 297400, 368776, 460970, 594800, 737552, 921940, 1152425, 1843880, 2304850, 3687760, 4609700, 9219400, 18438800]

約数ペア:

[(1, 18438800), (2, 9219400), (4, 4609700), (5, 3687760), (8, 2304850), (10, 1843880), (16, 1152425), (20, 921940), (25, 737552), (31, 594800), (40, 460970), (50, 368776), (62, 297400), (80, 230485), (100, 184388), (124, 148700), (155, 118960), (200, 92194), (248, 74350), (310, 59480), (400, 46097), (496, 37175), (620, 29740), (775, 23792), (1240, 14870), (1487, 12400), (1550, 11896), (2480, 7435), (2974, 6200), (3100, 5948)]