21405661920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{33107}}^1$

素因数の和:33577

約数の個数: 144

約数和(自身を含む): 73211720400

約数和(自身を除く): 51806058480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 449, 480, 720, 898, 1347, 1440, 1796, 2245, 2694, 3592, 4041, 4490, 5388, 6735, 7184, 8082, 8980, 10776, 13470, 14368, 16164, 17960, 20205, 21552, 26940, 32328, 33107, 35920, 40410, 43104, 53880, 64656, 66214, 71840, 80820, 99321, 107760, 129312, 132428, 161640, 165535, 198642, 215520, 264856, 297963, 323280, 331070, 397284, 496605, 529712, 595926, 646560, 662140, 794568, 993210, 1059424, 1191852, 1324280, 1489815, 1589136, 1986420, 2383704, 2648560, 2979630, 3178272, 3972840, 4767408, 5297120, 5959260, 7945680, 9534816, 11918520, 14865043, 15891360, 23837040, 29730086, 44595129, 47674080, 59460172, 74325215, 89190258, 118920344, 133785387, 148650430, 178380516, 222975645, 237840688, 267570774, 297300860, 356761032, 445951290, 475681376, 535141548, 594601720, 668926935, 713522064, 891902580, 1070283096, 1189203440, 1337853870, 1427044128, 1783805160, 2140566192, 2378406880, 2675707740, 3567610320, 4281132384, 5351415480, 7135220640, 10702830960, 21405661920]

約数ペア:

[(1, 21405661920), (2, 10702830960), (3, 7135220640), (4, 5351415480), (5, 4281132384), (6, 3567610320), (8, 2675707740), (9, 2378406880), (10, 2140566192), (12, 1783805160), (15, 1427044128), (16, 1337853870), (18, 1189203440), (20, 1070283096), (24, 891902580), (30, 713522064), (32, 668926935), (36, 594601720), (40, 535141548), (45, 475681376), (48, 445951290), (60, 356761032), (72, 297300860), (80, 267570774), (90, 237840688), (96, 222975645), (120, 178380516), (144, 148650430), (160, 133785387), (180, 118920344), (240, 89190258), (288, 74325215), (360, 59460172), (449, 47674080), (480, 44595129), (720, 29730086), (898, 23837040), (1347, 15891360), (1440, 14865043), (1796, 11918520), (2245, 9534816), (2694, 7945680), (3592, 5959260), (4041, 5297120), (4490, 4767408), (5388, 3972840), (6735, 3178272), (7184, 2979630), (8082, 2648560), (8980, 2383704), (10776, 1986420), (13470, 1589136), (14368, 1489815), (16164, 1324280), (17960, 1191852), (20205, 1059424), (21552, 993210), (26940, 794568), (32328, 662140), (33107, 646560), (35920, 595926), (40410, 529712), (43104, 496605), (53880, 397284), (64656, 331070), (66214, 323280), (71840, 297963), (80820, 264856), (99321, 215520), (107760, 198642), (129312, 165535), (132428, 161640)]