20567960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:213

約数の個数: 128

約数和(自身を含む): 58320000

約数和(自身を除く): 37752040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 29, 34, 35, 40, 56, 58, 68, 70, 85, 116, 119, 136, 140, 145, 149, 170, 203, 232, 238, 280, 290, 298, 340, 406, 476, 493, 580, 595, 596, 680, 745, 812, 952, 986, 1015, 1043, 1160, 1190, 1192, 1490, 1624, 1972, 2030, 2086, 2380, 2465, 2533, 2980, 3451, 3944, 4060, 4172, 4321, 4760, 4930, 5066, 5215, 5960, 6902, 8120, 8344, 8642, 9860, 10132, 10430, 12665, 13804, 17255, 17284, 17731, 19720, 20264, 20860, 21605, 25330, 27608, 30247, 34510, 34568, 35462, 41720, 43210, 50660, 60494, 69020, 70924, 73457, 86420, 88655, 101320, 120988, 138040, 141848, 146914, 151235, 172840, 177310, 241976, 293828, 302470, 354620, 367285, 514199, 587656, 604940, 709240, 734570, 1028398, 1209880, 1469140, 2056796, 2570995, 2938280, 4113592, 5141990, 10283980, 20567960]

約数ペア:

[(1, 20567960), (2, 10283980), (4, 5141990), (5, 4113592), (7, 2938280), (8, 2570995), (10, 2056796), (14, 1469140), (17, 1209880), (20, 1028398), (28, 734570), (29, 709240), (34, 604940), (35, 587656), (40, 514199), (56, 367285), (58, 354620), (68, 302470), (70, 293828), (85, 241976), (116, 177310), (119, 172840), (136, 151235), (140, 146914), (145, 141848), (149, 138040), (170, 120988), (203, 101320), (232, 88655), (238, 86420), (280, 73457), (290, 70924), (298, 69020), (340, 60494), (406, 50660), (476, 43210), (493, 41720), (580, 35462), (595, 34568), (596, 34510), (680, 30247), (745, 27608), (812, 25330), (952, 21605), (986, 20860), (1015, 20264), (1043, 19720), (1160, 17731), (1190, 17284), (1192, 17255), (1490, 13804), (1624, 12665), (1972, 10430), (2030, 10132), (2086, 9860), (2380, 8642), (2465, 8344), (2533, 8120), (2980, 6902), (3451, 5960), (3944, 5215), (4060, 5066), (4172, 4930), (4321, 4760)]