31641960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{271}}^1$

素因数の和:431

約数の個数: 128

約数和(自身を含む): 109670400

約数和(自身を除く): 78028440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 139, 140, 168, 210, 271, 278, 280, 417, 420, 542, 556, 695, 813, 834, 840, 973, 1084, 1112, 1355, 1390, 1626, 1668, 1897, 1946, 2085, 2168, 2710, 2780, 2919, 3252, 3336, 3794, 3892, 4065, 4170, 4865, 5420, 5560, 5691, 5838, 6504, 7588, 7784, 8130, 8340, 9485, 9730, 10840, 11382, 11676, 14595, 15176, 16260, 16680, 18970, 19460, 22764, 23352, 28455, 29190, 32520, 37669, 37940, 38920, 45528, 56910, 58380, 75338, 75880, 113007, 113820, 116760, 150676, 188345, 226014, 227640, 263683, 301352, 376690, 452028, 527366, 565035, 753380, 791049, 904056, 1054732, 1130070, 1318415, 1506760, 1582098, 2109464, 2260140, 2636830, 3164196, 3955245, 4520280, 5273660, 6328392, 7910490, 10547320, 15820980, 31641960]

約数ペア:

[(1, 31641960), (2, 15820980), (3, 10547320), (4, 7910490), (5, 6328392), (6, 5273660), (7, 4520280), (8, 3955245), (10, 3164196), (12, 2636830), (14, 2260140), (15, 2109464), (20, 1582098), (21, 1506760), (24, 1318415), (28, 1130070), (30, 1054732), (35, 904056), (40, 791049), (42, 753380), (56, 565035), (60, 527366), (70, 452028), (84, 376690), (105, 301352), (120, 263683), (139, 227640), (140, 226014), (168, 188345), (210, 150676), (271, 116760), (278, 113820), (280, 113007), (417, 75880), (420, 75338), (542, 58380), (556, 56910), (695, 45528), (813, 38920), (834, 37940), (840, 37669), (973, 32520), (1084, 29190), (1112, 28455), (1355, 23352), (1390, 22764), (1626, 19460), (1668, 18970), (1897, 16680), (1946, 16260), (2085, 15176), (2168, 14595), (2710, 11676), (2780, 11382), (2919, 10840), (3252, 9730), (3336, 9485), (3794, 8340), (3892, 8130), (4065, 7784), (4170, 7588), (4865, 6504), (5420, 5838), (5560, 5691)]