18380520

素因数分解:

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

素因数の和:118

約数の個数: 192

約数和(自身を含む): 64995840

約数和(自身を除く): 46615320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 61, 62, 72, 81, 90, 93, 108, 120, 122, 124, 135, 155, 162, 180, 183, 186, 216, 243, 244, 248, 270, 279, 305, 310, 324, 360, 366, 372, 405, 465, 486, 488, 540, 549, 558, 610, 620, 648, 732, 744, 810, 837, 915, 930, 972, 1080, 1098, 1116, 1215, 1220, 1240, 1395, 1464, 1620, 1647, 1674, 1830, 1860, 1891, 1944, 2196, 2232, 2430, 2440, 2511, 2745, 2790, 3240, 3294, 3348, 3660, 3720, 3782, 4185, 4392, 4860, 4941, 5022, 5490, 5580, 5673, 6588, 6696, 7320, 7533, 7564, 8235, 8370, 9455, 9720, 9882, 10044, 10980, 11160, 11346, 12555, 13176, 14823, 15066, 15128, 16470, 16740, 17019, 18910, 19764, 20088, 21960, 22692, 24705, 25110, 28365, 29646, 30132, 32940, 33480, 34038, 37665, 37820, 39528, 45384, 49410, 50220, 51057, 56730, 59292, 60264, 65880, 68076, 74115, 75330, 75640, 85095, 98820, 100440, 102114, 113460, 118584, 136152, 148230, 150660, 153171, 170190, 197640, 204228, 226920, 255285, 296460, 301320, 306342, 340380, 408456, 459513, 510570, 592920, 612684, 680760, 765855, 919026, 1021140, 1225368, 1531710, 1838052, 2042280, 2297565, 3063420, 3676104, 4595130, 6126840, 9190260, 18380520]

約数ペア:

[(1, 18380520), (2, 9190260), (3, 6126840), (4, 4595130), (5, 3676104), (6, 3063420), (8, 2297565), (9, 2042280), (10, 1838052), (12, 1531710), (15, 1225368), (18, 1021140), (20, 919026), (24, 765855), (27, 680760), (30, 612684), (31, 592920), (36, 510570), (40, 459513), (45, 408456), (54, 340380), (60, 306342), (61, 301320), (62, 296460), (72, 255285), (81, 226920), (90, 204228), (93, 197640), (108, 170190), (120, 153171), (122, 150660), (124, 148230), (135, 136152), (155, 118584), (162, 113460), (180, 102114), (183, 100440), (186, 98820), (216, 85095), (243, 75640), (244, 75330), (248, 74115), (270, 68076), (279, 65880), (305, 60264), (310, 59292), (324, 56730), (360, 51057), (366, 50220), (372, 49410), (405, 45384), (465, 39528), (486, 37820), (488, 37665), (540, 34038), (549, 33480), (558, 32940), (610, 30132), (620, 29646), (648, 28365), (732, 25110), (744, 24705), (810, 22692), (837, 21960), (915, 20088), (930, 19764), (972, 18910), (1080, 17019), (1098, 16740), (1116, 16470), (1215, 15128), (1220, 15066), (1240, 14823), (1395, 13176), (1464, 12555), (1620, 11346), (1647, 11160), (1674, 10980), (1830, 10044), (1860, 9882), (1891, 9720), (1944, 9455), (2196, 8370), (2232, 8235), (2430, 7564), (2440, 7533), (2511, 7320), (2745, 6696), (2790, 6588), (3240, 5673), (3294, 5580), (3348, 5490), (3660, 5022), (3720, 4941), (3782, 4860), (4185, 4392)]