81323340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:364

約数の個数: 144

約数和(自身を含む): 268128000

約数和(自身を除く): 186804660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 139, 140, 147, 196, 199, 210, 245, 278, 294, 398, 417, 420, 490, 556, 588, 597, 695, 735, 796, 834, 973, 980, 995, 1194, 1390, 1393, 1470, 1668, 1946, 1990, 2085, 2388, 2780, 2786, 2919, 2940, 2985, 3892, 3980, 4170, 4179, 4865, 5572, 5838, 5970, 6811, 6965, 8340, 8358, 9730, 9751, 11676, 11940, 13622, 13930, 14595, 16716, 19460, 19502, 20433, 20895, 27244, 27661, 27860, 29190, 29253, 34055, 39004, 40866, 41790, 48755, 55322, 58380, 58506, 68110, 81732, 82983, 83580, 97510, 102165, 110644, 117012, 136220, 138305, 146265, 165966, 193627, 195020, 204330, 276610, 292530, 331932, 387254, 408660, 414915, 553220, 580881, 585060, 774508, 829830, 968135, 1161762, 1355389, 1659660, 1936270, 2323524, 2710778, 2904405, 3872540, 4066167, 5421556, 5808810, 6776945, 8132334, 11617620, 13553890, 16264668, 20330835, 27107780, 40661670, 81323340]

約数ペア:

[(1, 81323340), (2, 40661670), (3, 27107780), (4, 20330835), (5, 16264668), (6, 13553890), (7, 11617620), (10, 8132334), (12, 6776945), (14, 5808810), (15, 5421556), (20, 4066167), (21, 3872540), (28, 2904405), (30, 2710778), (35, 2323524), (42, 1936270), (49, 1659660), (60, 1355389), (70, 1161762), (84, 968135), (98, 829830), (105, 774508), (139, 585060), (140, 580881), (147, 553220), (196, 414915), (199, 408660), (210, 387254), (245, 331932), (278, 292530), (294, 276610), (398, 204330), (417, 195020), (420, 193627), (490, 165966), (556, 146265), (588, 138305), (597, 136220), (695, 117012), (735, 110644), (796, 102165), (834, 97510), (973, 83580), (980, 82983), (995, 81732), (1194, 68110), (1390, 58506), (1393, 58380), (1470, 55322), (1668, 48755), (1946, 41790), (1990, 40866), (2085, 39004), (2388, 34055), (2780, 29253), (2786, 29190), (2919, 27860), (2940, 27661), (2985, 27244), (3892, 20895), (3980, 20433), (4170, 19502), (4179, 19460), (4865, 16716), (5572, 14595), (5838, 13930), (5970, 13622), (6811, 11940), (6965, 11676), (8340, 9751), (8358, 9730)]