18237780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:238

約数の個数: 144

約数和(自身を含む): 61746048

約数和(自身を除く): 43508268

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 61, 66, 90, 99, 110, 122, 132, 151, 165, 180, 183, 198, 220, 244, 302, 305, 330, 366, 396, 453, 495, 549, 604, 610, 660, 671, 732, 755, 906, 915, 990, 1098, 1220, 1342, 1359, 1510, 1661, 1812, 1830, 1980, 2013, 2196, 2265, 2684, 2718, 2745, 3020, 3322, 3355, 3660, 4026, 4530, 4983, 5436, 5490, 6039, 6644, 6710, 6795, 8052, 8305, 9060, 9211, 9966, 10065, 10980, 12078, 13420, 13590, 14949, 16610, 18422, 19932, 20130, 24156, 24915, 27180, 27633, 29898, 30195, 33220, 36844, 40260, 46055, 49830, 55266, 59796, 60390, 74745, 82899, 92110, 99660, 101321, 110532, 120780, 138165, 149490, 165798, 184220, 202642, 276330, 298980, 303963, 331596, 405284, 414495, 506605, 552660, 607926, 828990, 911889, 1013210, 1215852, 1519815, 1657980, 1823778, 2026420, 3039630, 3647556, 4559445, 6079260, 9118890, 18237780]

約数ペア:

[(1, 18237780), (2, 9118890), (3, 6079260), (4, 4559445), (5, 3647556), (6, 3039630), (9, 2026420), (10, 1823778), (11, 1657980), (12, 1519815), (15, 1215852), (18, 1013210), (20, 911889), (22, 828990), (30, 607926), (33, 552660), (36, 506605), (44, 414495), (45, 405284), (55, 331596), (60, 303963), (61, 298980), (66, 276330), (90, 202642), (99, 184220), (110, 165798), (122, 149490), (132, 138165), (151, 120780), (165, 110532), (180, 101321), (183, 99660), (198, 92110), (220, 82899), (244, 74745), (302, 60390), (305, 59796), (330, 55266), (366, 49830), (396, 46055), (453, 40260), (495, 36844), (549, 33220), (604, 30195), (610, 29898), (660, 27633), (671, 27180), (732, 24915), (755, 24156), (906, 20130), (915, 19932), (990, 18422), (1098, 16610), (1220, 14949), (1342, 13590), (1359, 13420), (1510, 12078), (1661, 10980), (1812, 10065), (1830, 9966), (1980, 9211), (2013, 9060), (2196, 8305), (2265, 8052), (2684, 6795), (2718, 6710), (2745, 6644), (3020, 6039), (3322, 5490), (3355, 5436), (3660, 4983), (4026, 4530)]