215864980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{21893}}^1$

素因数の和:21948

約数の個数: 48

約数和(自身を含む): 496555920

約数和(自身を除く): 280690940

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2465, 4930, 9860, 21893, 43786, 87572, 109465, 218930, 372181, 437860, 634897, 744362, 1269794, 1488724, 1860905, 2539588, 3174485, 3721810, 6348970, 7443620, 10793249, 12697940, 21586498, 43172996, 53966245, 107932490, 215864980]

約数ペア:

[(1, 215864980), (2, 107932490), (4, 53966245), (5, 43172996), (10, 21586498), (17, 12697940), (20, 10793249), (29, 7443620), (34, 6348970), (58, 3721810), (68, 3174485), (85, 2539588), (116, 1860905), (145, 1488724), (170, 1269794), (290, 744362), (340, 634897), (493, 437860), (580, 372181), (986, 218930), (1972, 109465), (2465, 87572), (4930, 43786), (9860, 21893)]