19778820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19391}}^1$

素因数の和:19420

約数の個数: 48

約数和(自身を含む): 58641408

約数和(自身を除く): 38862588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19391, 38782, 58173, 77564, 96955, 116346, 193910, 232692, 290865, 329647, 387820, 581730, 659294, 988941, 1163460, 1318588, 1648235, 1977882, 3296470, 3955764, 4944705, 6592940, 9889410, 19778820]

約数ペア:

[(1, 19778820), (2, 9889410), (3, 6592940), (4, 4944705), (5, 3955764), (6, 3296470), (10, 1977882), (12, 1648235), (15, 1318588), (17, 1163460), (20, 988941), (30, 659294), (34, 581730), (51, 387820), (60, 329647), (68, 290865), (85, 232692), (102, 193910), (170, 116346), (204, 96955), (255, 77564), (340, 58173), (510, 38782), (1020, 19391)]