18915390

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1$

素因数の和:363

約数の個数: 128

約数和(自身を含む): 57697920

約数和(自身を除く): 38782530

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 17, 18, 26, 27, 30, 34, 39, 45, 51, 54, 65, 78, 85, 90, 102, 117, 130, 135, 153, 170, 195, 221, 234, 255, 270, 306, 317, 351, 390, 442, 459, 510, 585, 634, 663, 702, 765, 918, 951, 1105, 1170, 1326, 1530, 1585, 1755, 1902, 1989, 2210, 2295, 2853, 3170, 3315, 3510, 3978, 4121, 4590, 4755, 5389, 5706, 5967, 6630, 8242, 8559, 9510, 9945, 10778, 11934, 12363, 14265, 16167, 17118, 19890, 20605, 24726, 26945, 28530, 29835, 32334, 37089, 41210, 42795, 48501, 53890, 59670, 61815, 70057, 74178, 80835, 85590, 97002, 111267, 123630, 140114, 145503, 161670, 185445, 210171, 222534, 242505, 291006, 350285, 370890, 420342, 485010, 556335, 630513, 700570, 727515, 1050855, 1112670, 1261026, 1455030, 1891539, 2101710, 3152565, 3783078, 6305130, 9457695, 18915390]

約数ペア:

[(1, 18915390), (2, 9457695), (3, 6305130), (5, 3783078), (6, 3152565), (9, 2101710), (10, 1891539), (13, 1455030), (15, 1261026), (17, 1112670), (18, 1050855), (26, 727515), (27, 700570), (30, 630513), (34, 556335), (39, 485010), (45, 420342), (51, 370890), (54, 350285), (65, 291006), (78, 242505), (85, 222534), (90, 210171), (102, 185445), (117, 161670), (130, 145503), (135, 140114), (153, 123630), (170, 111267), (195, 97002), (221, 85590), (234, 80835), (255, 74178), (270, 70057), (306, 61815), (317, 59670), (351, 53890), (390, 48501), (442, 42795), (459, 41210), (510, 37089), (585, 32334), (634, 29835), (663, 28530), (702, 26945), (765, 24726), (918, 20605), (951, 19890), (1105, 17118), (1170, 16167), (1326, 14265), (1530, 12363), (1585, 11934), (1755, 10778), (1902, 9945), (1989, 9510), (2210, 8559), (2295, 8242), (2853, 6630), (3170, 5967), (3315, 5706), (3510, 5389), (3978, 4755), (4121, 4590)]