18639990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 54743040

約数和(自身を除く): 36103050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 31, 34, 45, 51, 54, 62, 85, 90, 93, 102, 131, 135, 153, 155, 170, 186, 255, 262, 270, 279, 306, 310, 393, 459, 465, 510, 527, 558, 655, 765, 786, 837, 918, 930, 1054, 1179, 1310, 1395, 1530, 1581, 1674, 1965, 2227, 2295, 2358, 2635, 2790, 3162, 3537, 3930, 4061, 4185, 4454, 4590, 4743, 5270, 5895, 6681, 7074, 7905, 8122, 8370, 9486, 11135, 11790, 12183, 13362, 14229, 15810, 17685, 20043, 20305, 22270, 23715, 24366, 28458, 33405, 35370, 36549, 40086, 40610, 47430, 60129, 60915, 66810, 69037, 71145, 73098, 100215, 109647, 120258, 121830, 138074, 142290, 182745, 200430, 207111, 219294, 300645, 345185, 365490, 414222, 548235, 601290, 621333, 690370, 1035555, 1096470, 1242666, 1863999, 2071110, 3106665, 3727998, 6213330, 9319995, 18639990]

約数ペア:

[(1, 18639990), (2, 9319995), (3, 6213330), (5, 3727998), (6, 3106665), (9, 2071110), (10, 1863999), (15, 1242666), (17, 1096470), (18, 1035555), (27, 690370), (30, 621333), (31, 601290), (34, 548235), (45, 414222), (51, 365490), (54, 345185), (62, 300645), (85, 219294), (90, 207111), (93, 200430), (102, 182745), (131, 142290), (135, 138074), (153, 121830), (155, 120258), (170, 109647), (186, 100215), (255, 73098), (262, 71145), (270, 69037), (279, 66810), (306, 60915), (310, 60129), (393, 47430), (459, 40610), (465, 40086), (510, 36549), (527, 35370), (558, 33405), (655, 28458), (765, 24366), (786, 23715), (837, 22270), (918, 20305), (930, 20043), (1054, 17685), (1179, 15810), (1310, 14229), (1395, 13362), (1530, 12183), (1581, 11790), (1674, 11135), (1965, 9486), (2227, 8370), (2295, 8122), (2358, 7905), (2635, 7074), (2790, 6681), (3162, 5895), (3537, 5270), (3930, 4743), (4061, 4590), (4185, 4454)]