21215904

素因数分解:

$2^5\times 3^1\times {\mathrm{31}}^1\times {\mathrm{7129}}^1$

素因数の和:7173

約数の個数: 48

約数和(自身を含む): 57496320

約数和(自身を除く): 36280416

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 32, 48, 62, 93, 96, 124, 186, 248, 372, 496, 744, 992, 1488, 2976, 7129, 14258, 21387, 28516, 42774, 57032, 85548, 114064, 171096, 220999, 228128, 342192, 441998, 662997, 684384, 883996, 1325994, 1767992, 2651988, 3535984, 5303976, 7071968, 10607952, 21215904]

約数ペア:

[(1, 21215904), (2, 10607952), (3, 7071968), (4, 5303976), (6, 3535984), (8, 2651988), (12, 1767992), (16, 1325994), (24, 883996), (31, 684384), (32, 662997), (48, 441998), (62, 342192), (93, 228128), (96, 220999), (124, 171096), (186, 114064), (248, 85548), (372, 57032), (496, 42774), (744, 28516), (992, 21387), (1488, 14258), (2976, 7129)]