20487900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{2203}}^1$

素因数の和:2251

約数の個数: 72

約数和(自身を含む): 61218304

約数和(自身を除く): 40730404

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 31, 50, 60, 62, 75, 93, 100, 124, 150, 155, 186, 300, 310, 372, 465, 620, 775, 930, 1550, 1860, 2203, 2325, 3100, 4406, 4650, 6609, 8812, 9300, 11015, 13218, 22030, 26436, 33045, 44060, 55075, 66090, 68293, 110150, 132180, 136586, 165225, 204879, 220300, 273172, 330450, 341465, 409758, 660900, 682930, 819516, 1024395, 1365860, 1707325, 2048790, 3414650, 4097580, 5121975, 6829300, 10243950, 20487900]

約数ペア:

[(1, 20487900), (2, 10243950), (3, 6829300), (4, 5121975), (5, 4097580), (6, 3414650), (10, 2048790), (12, 1707325), (15, 1365860), (20, 1024395), (25, 819516), (30, 682930), (31, 660900), (50, 409758), (60, 341465), (62, 330450), (75, 273172), (93, 220300), (100, 204879), (124, 165225), (150, 136586), (155, 132180), (186, 110150), (300, 68293), (310, 66090), (372, 55075), (465, 44060), (620, 33045), (775, 26436), (930, 22030), (1550, 13218), (1860, 11015), (2203, 9300), (2325, 8812), (3100, 6609), (4406, 4650)]