31380972

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{643}}^1$

素因数の和:747

約数の個数: 72

約数和(自身を含む): 86337216

約数和(自身を除く): 54956244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 83, 84, 98, 147, 166, 196, 249, 294, 332, 498, 581, 588, 643, 996, 1162, 1286, 1743, 1929, 2324, 2572, 3486, 3858, 4067, 4501, 6972, 7716, 8134, 9002, 12201, 13503, 16268, 18004, 24402, 27006, 31507, 48804, 53369, 54012, 63014, 94521, 106738, 126028, 160107, 189042, 213476, 320214, 373583, 378084, 640428, 747166, 1120749, 1494332, 2241498, 2615081, 4482996, 5230162, 7845243, 10460324, 15690486, 31380972]

約数ペア:

[(1, 31380972), (2, 15690486), (3, 10460324), (4, 7845243), (6, 5230162), (7, 4482996), (12, 2615081), (14, 2241498), (21, 1494332), (28, 1120749), (42, 747166), (49, 640428), (83, 378084), (84, 373583), (98, 320214), (147, 213476), (166, 189042), (196, 160107), (249, 126028), (294, 106738), (332, 94521), (498, 63014), (581, 54012), (588, 53369), (643, 48804), (996, 31507), (1162, 27006), (1286, 24402), (1743, 18004), (1929, 16268), (2324, 13503), (2572, 12201), (3486, 9002), (3858, 8134), (4067, 7716), (4501, 6972)]