20860280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{367}}^1$

素因数の和:421

約数の個数: 96

約数和(自身を含む): 56635200

約数和(自身を除く): 35774920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 98, 116, 140, 145, 196, 203, 232, 245, 280, 290, 367, 392, 406, 490, 580, 734, 812, 980, 1015, 1160, 1421, 1468, 1624, 1835, 1960, 2030, 2569, 2842, 2936, 3670, 4060, 5138, 5684, 7105, 7340, 8120, 10276, 10643, 11368, 12845, 14210, 14680, 17983, 20552, 21286, 25690, 28420, 35966, 42572, 51380, 53215, 56840, 71932, 74501, 85144, 89915, 102760, 106430, 143864, 149002, 179830, 212860, 298004, 359660, 372505, 425720, 521507, 596008, 719320, 745010, 1043014, 1490020, 2086028, 2607535, 2980040, 4172056, 5215070, 10430140, 20860280]

約数ペア:

[(1, 20860280), (2, 10430140), (4, 5215070), (5, 4172056), (7, 2980040), (8, 2607535), (10, 2086028), (14, 1490020), (20, 1043014), (28, 745010), (29, 719320), (35, 596008), (40, 521507), (49, 425720), (56, 372505), (58, 359660), (70, 298004), (98, 212860), (116, 179830), (140, 149002), (145, 143864), (196, 106430), (203, 102760), (232, 89915), (245, 85144), (280, 74501), (290, 71932), (367, 56840), (392, 53215), (406, 51380), (490, 42572), (580, 35966), (734, 28420), (812, 25690), (980, 21286), (1015, 20552), (1160, 17983), (1421, 14680), (1468, 14210), (1624, 12845), (1835, 11368), (1960, 10643), (2030, 10276), (2569, 8120), (2842, 7340), (2936, 7105), (3670, 5684), (4060, 5138)]