21431904

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^2\times {\mathrm{1321}}^1$

素因数の和:1360

約数の個数: 72

約数和(自身を含む): 60965352

約数和(自身を除く): 39533448

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 169, 208, 312, 338, 416, 507, 624, 676, 1014, 1248, 1321, 1352, 2028, 2642, 2704, 3963, 4056, 5284, 5408, 7926, 8112, 10568, 15852, 16224, 17173, 21136, 31704, 34346, 42272, 51519, 63408, 68692, 103038, 126816, 137384, 206076, 223249, 274768, 412152, 446498, 549536, 669747, 824304, 892996, 1339494, 1648608, 1785992, 2678988, 3571984, 5357976, 7143968, 10715952, 21431904]

約数ペア:

[(1, 21431904), (2, 10715952), (3, 7143968), (4, 5357976), (6, 3571984), (8, 2678988), (12, 1785992), (13, 1648608), (16, 1339494), (24, 892996), (26, 824304), (32, 669747), (39, 549536), (48, 446498), (52, 412152), (78, 274768), (96, 223249), (104, 206076), (156, 137384), (169, 126816), (208, 103038), (312, 68692), (338, 63408), (416, 51519), (507, 42272), (624, 34346), (676, 31704), (1014, 21136), (1248, 17173), (1321, 16224), (1352, 15852), (2028, 10568), (2642, 8112), (2704, 7926), (3963, 5408), (4056, 5284)]