19995210

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:252

約数の個数: 96

約数和(自身を含む): 55261440

約数和(自身を除く): 35266230

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 47, 58, 87, 90, 94, 141, 145, 163, 174, 235, 261, 282, 290, 326, 423, 435, 470, 489, 522, 705, 815, 846, 870, 978, 1305, 1363, 1410, 1467, 1630, 2115, 2445, 2610, 2726, 2934, 4089, 4230, 4727, 4890, 6815, 7335, 7661, 8178, 9454, 12267, 13630, 14181, 14670, 15322, 20445, 22983, 23635, 24534, 28362, 38305, 40890, 42543, 45966, 47270, 61335, 68949, 70905, 76610, 85086, 114915, 122670, 137898, 141810, 212715, 222169, 229830, 344745, 425430, 444338, 666507, 689490, 1110845, 1333014, 1999521, 2221690, 3332535, 3999042, 6665070, 9997605, 19995210]

約数ペア:

[(1, 19995210), (2, 9997605), (3, 6665070), (5, 3999042), (6, 3332535), (9, 2221690), (10, 1999521), (15, 1333014), (18, 1110845), (29, 689490), (30, 666507), (45, 444338), (47, 425430), (58, 344745), (87, 229830), (90, 222169), (94, 212715), (141, 141810), (145, 137898), (163, 122670), (174, 114915), (235, 85086), (261, 76610), (282, 70905), (290, 68949), (326, 61335), (423, 47270), (435, 45966), (470, 42543), (489, 40890), (522, 38305), (705, 28362), (815, 24534), (846, 23635), (870, 22983), (978, 20445), (1305, 15322), (1363, 14670), (1410, 14181), (1467, 13630), (1630, 12267), (2115, 9454), (2445, 8178), (2610, 7661), (2726, 7335), (2934, 6815), (4089, 4890), (4230, 4727)]