20739320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4357}}^1$

素因数の和:4392

約数の個数: 64

約数和(自身を含む): 56479680

約数和(自身を除く): 35740360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4357, 4760, 8714, 17428, 21785, 30499, 34856, 43570, 60998, 74069, 87140, 121996, 148138, 152495, 174280, 243992, 296276, 304990, 370345, 518483, 592552, 609980, 740690, 1036966, 1219960, 1481380, 2073932, 2592415, 2962760, 4147864, 5184830, 10369660, 20739320]

約数ペア:

[(1, 20739320), (2, 10369660), (4, 5184830), (5, 4147864), (7, 2962760), (8, 2592415), (10, 2073932), (14, 1481380), (17, 1219960), (20, 1036966), (28, 740690), (34, 609980), (35, 592552), (40, 518483), (56, 370345), (68, 304990), (70, 296276), (85, 243992), (119, 174280), (136, 152495), (140, 148138), (170, 121996), (238, 87140), (280, 74069), (340, 60998), (476, 43570), (595, 34856), (680, 30499), (952, 21785), (1190, 17428), (2380, 8714), (4357, 4760)]