204820720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6353}}^1$

素因数の和:6410

約数の個数: 80

約数和(自身を含む): 529466112

約数和(自身を除く): 324645392

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6353, 6448, 8060, 12706, 16120, 25412, 31765, 32240, 50824, 63530, 82589, 101648, 127060, 165178, 196943, 254120, 330356, 393886, 412945, 508240, 660712, 787772, 825890, 984715, 1321424, 1575544, 1651780, 1969430, 2560259, 3151088, 3303560, 3938860, 5120518, 6607120, 7877720, 10241036, 12801295, 15755440, 20482072, 25602590, 40964144, 51205180, 102410360, 204820720]

約数ペア:

[(1, 204820720), (2, 102410360), (4, 51205180), (5, 40964144), (8, 25602590), (10, 20482072), (13, 15755440), (16, 12801295), (20, 10241036), (26, 7877720), (31, 6607120), (40, 5120518), (52, 3938860), (62, 3303560), (65, 3151088), (80, 2560259), (104, 1969430), (124, 1651780), (130, 1575544), (155, 1321424), (208, 984715), (248, 825890), (260, 787772), (310, 660712), (403, 508240), (496, 412945), (520, 393886), (620, 330356), (806, 254120), (1040, 196943), (1240, 165178), (1612, 127060), (2015, 101648), (2480, 82589), (3224, 63530), (4030, 50824), (6353, 32240), (6448, 31765), (8060, 25412), (12706, 16120)]