131245240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{6421}}^1$

素因数の和:6512

約数の個数: 64

約数和(自身を含む): 342164160

約数和(自身を除く): 210918920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 4088, 5110, 6421, 10220, 12842, 20440, 25684, 32105, 44947, 51368, 64210, 89894, 128420, 179788, 224735, 256840, 359576, 449470, 468733, 898940, 937466, 1797880, 1874932, 2343665, 3281131, 3749864, 4687330, 6562262, 9374660, 13124524, 16405655, 18749320, 26249048, 32811310, 65622620, 131245240]

約数ペア:

[(1, 131245240), (2, 65622620), (4, 32811310), (5, 26249048), (7, 18749320), (8, 16405655), (10, 13124524), (14, 9374660), (20, 6562262), (28, 4687330), (35, 3749864), (40, 3281131), (56, 2343665), (70, 1874932), (73, 1797880), (140, 937466), (146, 898940), (280, 468733), (292, 449470), (365, 359576), (511, 256840), (584, 224735), (730, 179788), (1022, 128420), (1460, 89894), (2044, 64210), (2555, 51368), (2920, 44947), (4088, 32105), (5110, 25684), (6421, 20440), (10220, 12842)]