18771120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1$

素因数の和:108

約数の個数: 180

約数和(自身を含む): 67394496

約数和(自身を除く): 48623376

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 31, 36, 40, 45, 48, 58, 60, 62, 72, 80, 87, 90, 93, 116, 120, 124, 144, 145, 155, 174, 180, 186, 232, 240, 248, 261, 279, 290, 310, 348, 360, 372, 435, 464, 465, 496, 522, 558, 580, 620, 696, 720, 744, 841, 870, 899, 930, 1044, 1116, 1160, 1240, 1305, 1392, 1395, 1488, 1682, 1740, 1798, 1860, 2088, 2232, 2320, 2480, 2523, 2610, 2697, 2790, 3364, 3480, 3596, 3720, 4176, 4205, 4464, 4495, 5046, 5220, 5394, 5580, 6728, 6960, 7192, 7440, 7569, 8091, 8410, 8990, 10092, 10440, 10788, 11160, 12615, 13456, 13485, 14384, 15138, 16182, 16820, 17980, 20184, 20880, 21576, 22320, 25230, 26071, 26970, 30276, 32364, 33640, 35960, 37845, 40368, 40455, 43152, 50460, 52142, 53940, 60552, 64728, 67280, 71920, 75690, 78213, 80910, 100920, 104284, 107880, 121104, 129456, 130355, 151380, 156426, 161820, 201840, 208568, 215760, 234639, 260710, 302760, 312852, 323640, 391065, 417136, 469278, 521420, 605520, 625704, 647280, 782130, 938556, 1042840, 1173195, 1251408, 1564260, 1877112, 2085680, 2346390, 3128520, 3754224, 4692780, 6257040, 9385560, 18771120]

約数ペア:

[(1, 18771120), (2, 9385560), (3, 6257040), (4, 4692780), (5, 3754224), (6, 3128520), (8, 2346390), (9, 2085680), (10, 1877112), (12, 1564260), (15, 1251408), (16, 1173195), (18, 1042840), (20, 938556), (24, 782130), (29, 647280), (30, 625704), (31, 605520), (36, 521420), (40, 469278), (45, 417136), (48, 391065), (58, 323640), (60, 312852), (62, 302760), (72, 260710), (80, 234639), (87, 215760), (90, 208568), (93, 201840), (116, 161820), (120, 156426), (124, 151380), (144, 130355), (145, 129456), (155, 121104), (174, 107880), (180, 104284), (186, 100920), (232, 80910), (240, 78213), (248, 75690), (261, 71920), (279, 67280), (290, 64728), (310, 60552), (348, 53940), (360, 52142), (372, 50460), (435, 43152), (464, 40455), (465, 40368), (496, 37845), (522, 35960), (558, 33640), (580, 32364), (620, 30276), (696, 26970), (720, 26071), (744, 25230), (841, 22320), (870, 21576), (899, 20880), (930, 20184), (1044, 17980), (1116, 16820), (1160, 16182), (1240, 15138), (1305, 14384), (1392, 13485), (1395, 13456), (1488, 12615), (1682, 11160), (1740, 10788), (1798, 10440), (1860, 10092), (2088, 8990), (2232, 8410), (2320, 8091), (2480, 7569), (2523, 7440), (2610, 7192), (2697, 6960), (2790, 6728), (3364, 5580), (3480, 5394), (3596, 5220), (3720, 5046), (4176, 4495), (4205, 4464)]