20763180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:168

約数の個数: 108

約数和(自身を含む): 66096576

約数和(自身を除く): 45333396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 61, 62, 90, 93, 122, 124, 155, 180, 183, 186, 244, 279, 305, 310, 366, 372, 465, 549, 558, 610, 620, 732, 915, 930, 1098, 1116, 1220, 1395, 1830, 1860, 1891, 2196, 2745, 2790, 3660, 3721, 3782, 5490, 5580, 5673, 7442, 7564, 9455, 10980, 11163, 11346, 14884, 17019, 18605, 18910, 22326, 22692, 28365, 33489, 34038, 37210, 37820, 44652, 55815, 56730, 66978, 68076, 74420, 85095, 111630, 113460, 115351, 133956, 167445, 170190, 223260, 230702, 334890, 340380, 346053, 461404, 576755, 669780, 692106, 1038159, 1153510, 1384212, 1730265, 2076318, 2307020, 3460530, 4152636, 5190795, 6921060, 10381590, 20763180]

約数ペア:

[(1, 20763180), (2, 10381590), (3, 6921060), (4, 5190795), (5, 4152636), (6, 3460530), (9, 2307020), (10, 2076318), (12, 1730265), (15, 1384212), (18, 1153510), (20, 1038159), (30, 692106), (31, 669780), (36, 576755), (45, 461404), (60, 346053), (61, 340380), (62, 334890), (90, 230702), (93, 223260), (122, 170190), (124, 167445), (155, 133956), (180, 115351), (183, 113460), (186, 111630), (244, 85095), (279, 74420), (305, 68076), (310, 66978), (366, 56730), (372, 55815), (465, 44652), (549, 37820), (558, 37210), (610, 34038), (620, 33489), (732, 28365), (915, 22692), (930, 22326), (1098, 18910), (1116, 18605), (1220, 17019), (1395, 14884), (1830, 11346), (1860, 11163), (1891, 10980), (2196, 9455), (2745, 7564), (2790, 7442), (3660, 5673), (3721, 5580), (3782, 5490)]