40880320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:378

約数の個数: 112

約数和(自身を含む): 108557568

約数和(自身を除く): 67677248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 317, 320, 403, 416, 496, 520, 620, 634, 806, 832, 992, 1040, 1240, 1268, 1585, 1612, 1984, 2015, 2080, 2480, 2536, 3170, 3224, 4030, 4121, 4160, 4960, 5072, 6340, 6448, 8060, 8242, 9827, 9920, 10144, 12680, 12896, 16120, 16484, 19654, 20288, 20605, 25360, 25792, 32240, 32968, 39308, 41210, 49135, 50720, 64480, 65936, 78616, 82420, 98270, 101440, 127751, 128960, 131872, 157232, 164840, 196540, 255502, 263744, 314464, 329680, 393080, 511004, 628928, 638755, 659360, 786160, 1022008, 1277510, 1318720, 1572320, 2044016, 2555020, 3144640, 4088032, 5110040, 8176064, 10220080, 20440160, 40880320]

約数ペア:

[(1, 40880320), (2, 20440160), (4, 10220080), (5, 8176064), (8, 5110040), (10, 4088032), (13, 3144640), (16, 2555020), (20, 2044016), (26, 1572320), (31, 1318720), (32, 1277510), (40, 1022008), (52, 786160), (62, 659360), (64, 638755), (65, 628928), (80, 511004), (104, 393080), (124, 329680), (130, 314464), (155, 263744), (160, 255502), (208, 196540), (248, 164840), (260, 157232), (310, 131872), (317, 128960), (320, 127751), (403, 101440), (416, 98270), (496, 82420), (520, 78616), (620, 65936), (634, 64480), (806, 50720), (832, 49135), (992, 41210), (1040, 39308), (1240, 32968), (1268, 32240), (1585, 25792), (1612, 25360), (1984, 20605), (2015, 20288), (2080, 19654), (2480, 16484), (2536, 16120), (3170, 12896), (3224, 12680), (4030, 10144), (4121, 9920), (4160, 9827), (4960, 8242), (5072, 8060), (6340, 6448)]