20497400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{11}}^4$

素因数の和:67

約数の個数: 120

約数和(自身を含む): 59910600

約数和(自身を除く): 39413200

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 88, 100, 110, 121, 140, 154, 175, 200, 220, 242, 275, 280, 308, 350, 385, 440, 484, 550, 605, 616, 700, 770, 847, 968, 1100, 1210, 1331, 1400, 1540, 1694, 1925, 2200, 2420, 2662, 3025, 3080, 3388, 3850, 4235, 4840, 5324, 6050, 6655, 6776, 7700, 8470, 9317, 10648, 12100, 13310, 14641, 15400, 16940, 18634, 21175, 24200, 26620, 29282, 33275, 33880, 37268, 42350, 46585, 53240, 58564, 66550, 73205, 74536, 84700, 93170, 102487, 117128, 133100, 146410, 169400, 186340, 204974, 232925, 266200, 292820, 366025, 372680, 409948, 465850, 512435, 585640, 732050, 819896, 931700, 1024870, 1464100, 1863400, 2049740, 2562175, 2928200, 4099480, 5124350, 10248700, 20497400]

約数ペア:

[(1, 20497400), (2, 10248700), (4, 5124350), (5, 4099480), (7, 2928200), (8, 2562175), (10, 2049740), (11, 1863400), (14, 1464100), (20, 1024870), (22, 931700), (25, 819896), (28, 732050), (35, 585640), (40, 512435), (44, 465850), (50, 409948), (55, 372680), (56, 366025), (70, 292820), (77, 266200), (88, 232925), (100, 204974), (110, 186340), (121, 169400), (140, 146410), (154, 133100), (175, 117128), (200, 102487), (220, 93170), (242, 84700), (275, 74536), (280, 73205), (308, 66550), (350, 58564), (385, 53240), (440, 46585), (484, 42350), (550, 37268), (605, 33880), (616, 33275), (700, 29282), (770, 26620), (847, 24200), (968, 21175), (1100, 18634), (1210, 16940), (1331, 15400), (1400, 14641), (1540, 13310), (1694, 12100), (1925, 10648), (2200, 9317), (2420, 8470), (2662, 7700), (3025, 6776), (3080, 6655), (3388, 6050), (3850, 5324), (4235, 4840)]