220143280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{631}}^1$

素因数の和:747

約数の個数: 120

約数和(自身を含む): 603041760

約数和(自身を除く): 382898480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 89, 98, 112, 140, 178, 196, 245, 280, 356, 392, 445, 490, 560, 623, 631, 712, 784, 890, 980, 1246, 1262, 1424, 1780, 1960, 2492, 2524, 3115, 3155, 3560, 3920, 4361, 4417, 4984, 5048, 6230, 6310, 7120, 8722, 8834, 9968, 10096, 12460, 12620, 17444, 17668, 21805, 22085, 24920, 25240, 30919, 34888, 35336, 43610, 44170, 49840, 50480, 56159, 61838, 69776, 70672, 87220, 88340, 112318, 123676, 154595, 174440, 176680, 224636, 247352, 280795, 309190, 348880, 353360, 393113, 449272, 494704, 561590, 618380, 786226, 898544, 1123180, 1236760, 1572452, 1965565, 2246360, 2473520, 2751791, 3144904, 3931130, 4492720, 5503582, 6289808, 7862260, 11007164, 13758955, 15724520, 22014328, 27517910, 31449040, 44028656, 55035820, 110071640, 220143280]

約数ペア:

[(1, 220143280), (2, 110071640), (4, 55035820), (5, 44028656), (7, 31449040), (8, 27517910), (10, 22014328), (14, 15724520), (16, 13758955), (20, 11007164), (28, 7862260), (35, 6289808), (40, 5503582), (49, 4492720), (56, 3931130), (70, 3144904), (80, 2751791), (89, 2473520), (98, 2246360), (112, 1965565), (140, 1572452), (178, 1236760), (196, 1123180), (245, 898544), (280, 786226), (356, 618380), (392, 561590), (445, 494704), (490, 449272), (560, 393113), (623, 353360), (631, 348880), (712, 309190), (784, 280795), (890, 247352), (980, 224636), (1246, 176680), (1262, 174440), (1424, 154595), (1780, 123676), (1960, 112318), (2492, 88340), (2524, 87220), (3115, 70672), (3155, 69776), (3560, 61838), (3920, 56159), (4361, 50480), (4417, 49840), (4984, 44170), (5048, 43610), (6230, 35336), (6310, 34888), (7120, 30919), (8722, 25240), (8834, 24920), (9968, 22085), (10096, 21805), (12460, 17668), (12620, 17444)]