208002560

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2621}}^1$

素因数の和:2675

約数の個数: 80

約数和(自身を含む): 515002752

約数和(自身を除く): 307000192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 2621, 3968, 4960, 5242, 7936, 9920, 10484, 13105, 15872, 19840, 20968, 26210, 39680, 41936, 52420, 79360, 81251, 83872, 104840, 162502, 167744, 209680, 325004, 335488, 406255, 419360, 650008, 670976, 812510, 838720, 1300016, 1341952, 1625020, 1677440, 2600032, 3250040, 3354880, 5200064, 6500080, 6709760, 10400128, 13000160, 20800256, 26000320, 41600512, 52000640, 104001280, 208002560]

約数ペア:

[(1, 208002560), (2, 104001280), (4, 52000640), (5, 41600512), (8, 26000320), (10, 20800256), (16, 13000160), (20, 10400128), (31, 6709760), (32, 6500080), (40, 5200064), (62, 3354880), (64, 3250040), (80, 2600032), (124, 1677440), (128, 1625020), (155, 1341952), (160, 1300016), (248, 838720), (256, 812510), (310, 670976), (320, 650008), (496, 419360), (512, 406255), (620, 335488), (640, 325004), (992, 209680), (1240, 167744), (1280, 162502), (1984, 104840), (2480, 83872), (2560, 81251), (2621, 79360), (3968, 52420), (4960, 41936), (5242, 39680), (7936, 26210), (9920, 20968), (10484, 19840), (13105, 15872)]