21456120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 192

約数和(自身を含む): 77565600

約数和(自身を除く): 56109480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 49, 56, 60, 70, 82, 84, 89, 98, 105, 120, 123, 140, 147, 164, 168, 178, 196, 205, 210, 245, 246, 267, 280, 287, 294, 328, 356, 392, 410, 420, 445, 490, 492, 534, 574, 588, 615, 623, 712, 735, 820, 840, 861, 890, 980, 984, 1068, 1148, 1176, 1230, 1246, 1335, 1435, 1470, 1640, 1722, 1780, 1869, 1960, 2009, 2136, 2296, 2460, 2492, 2670, 2870, 2940, 3115, 3444, 3560, 3649, 3738, 4018, 4305, 4361, 4920, 4984, 5340, 5740, 5880, 6027, 6230, 6888, 7298, 7476, 8036, 8610, 8722, 9345, 10045, 10680, 10947, 11480, 12054, 12460, 13083, 14596, 14952, 16072, 17220, 17444, 18245, 18690, 20090, 21805, 21894, 24108, 24920, 25543, 26166, 29192, 30135, 34440, 34888, 36490, 37380, 40180, 43610, 43788, 48216, 51086, 52332, 54735, 60270, 65415, 72980, 74760, 76629, 80360, 87220, 87576, 102172, 104664, 109470, 120540, 127715, 130830, 145960, 153258, 174440, 178801, 204344, 218940, 241080, 255430, 261660, 306516, 357602, 383145, 437880, 510860, 523320, 536403, 613032, 715204, 766290, 894005, 1021720, 1072806, 1430408, 1532580, 1788010, 2145612, 2682015, 3065160, 3576020, 4291224, 5364030, 7152040, 10728060, 21456120]

約数ペア:

[(1, 21456120), (2, 10728060), (3, 7152040), (4, 5364030), (5, 4291224), (6, 3576020), (7, 3065160), (8, 2682015), (10, 2145612), (12, 1788010), (14, 1532580), (15, 1430408), (20, 1072806), (21, 1021720), (24, 894005), (28, 766290), (30, 715204), (35, 613032), (40, 536403), (41, 523320), (42, 510860), (49, 437880), (56, 383145), (60, 357602), (70, 306516), (82, 261660), (84, 255430), (89, 241080), (98, 218940), (105, 204344), (120, 178801), (123, 174440), (140, 153258), (147, 145960), (164, 130830), (168, 127715), (178, 120540), (196, 109470), (205, 104664), (210, 102172), (245, 87576), (246, 87220), (267, 80360), (280, 76629), (287, 74760), (294, 72980), (328, 65415), (356, 60270), (392, 54735), (410, 52332), (420, 51086), (445, 48216), (490, 43788), (492, 43610), (534, 40180), (574, 37380), (588, 36490), (615, 34888), (623, 34440), (712, 30135), (735, 29192), (820, 26166), (840, 25543), (861, 24920), (890, 24108), (980, 21894), (984, 21805), (1068, 20090), (1148, 18690), (1176, 18245), (1230, 17444), (1246, 17220), (1335, 16072), (1435, 14952), (1470, 14596), (1640, 13083), (1722, 12460), (1780, 12054), (1869, 11480), (1960, 10947), (2009, 10680), (2136, 10045), (2296, 9345), (2460, 8722), (2492, 8610), (2670, 8036), (2870, 7476), (2940, 7298), (3115, 6888), (3444, 6230), (3560, 6027), (3649, 5880), (3738, 5740), (4018, 5340), (4305, 4984), (4361, 4920)]