20489280

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{3049}}^1$

素因数の和:3076

約数の個数: 112

約数和(自身を含む): 74371200

約数和(自身を除く): 53881920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 420, 448, 480, 560, 672, 840, 960, 1120, 1344, 1680, 2240, 3049, 3360, 6098, 6720, 9147, 12196, 15245, 18294, 21343, 24392, 30490, 36588, 42686, 45735, 48784, 60980, 64029, 73176, 85372, 91470, 97568, 106715, 121960, 128058, 146352, 170744, 182940, 195136, 213430, 243920, 256116, 292704, 320145, 341488, 365880, 426860, 487840, 512232, 585408, 640290, 682976, 731760, 853720, 975680, 1024464, 1280580, 1365952, 1463520, 1707440, 2048928, 2561160, 2927040, 3414880, 4097856, 5122320, 6829760, 10244640, 20489280]

約数ペア:

[(1, 20489280), (2, 10244640), (3, 6829760), (4, 5122320), (5, 4097856), (6, 3414880), (7, 2927040), (8, 2561160), (10, 2048928), (12, 1707440), (14, 1463520), (15, 1365952), (16, 1280580), (20, 1024464), (21, 975680), (24, 853720), (28, 731760), (30, 682976), (32, 640290), (35, 585408), (40, 512232), (42, 487840), (48, 426860), (56, 365880), (60, 341488), (64, 320145), (70, 292704), (80, 256116), (84, 243920), (96, 213430), (105, 195136), (112, 182940), (120, 170744), (140, 146352), (160, 128058), (168, 121960), (192, 106715), (210, 97568), (224, 91470), (240, 85372), (280, 73176), (320, 64029), (336, 60980), (420, 48784), (448, 45735), (480, 42686), (560, 36588), (672, 30490), (840, 24392), (960, 21343), (1120, 18294), (1344, 15245), (1680, 12196), (2240, 9147), (3049, 6720), (3360, 6098)]