21373875

素因数分解:

$3^4\times 5^3\times {\mathrm{2111}}^1$

素因数の和:2138

約数の個数: 40

約数和(自身を含む): 39866112

約数和(自身を除く): 18492237

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 2025, 2111, 3375, 6333, 10125, 10555, 18999, 31665, 52775, 56997, 94995, 158325, 170991, 263875, 284985, 474975, 791625, 854955, 1424925, 2374875, 4274775, 7124625, 21373875]

約数ペア:

[(1, 21373875), (3, 7124625), (5, 4274775), (9, 2374875), (15, 1424925), (25, 854955), (27, 791625), (45, 474975), (75, 284985), (81, 263875), (125, 170991), (135, 158325), (225, 94995), (375, 56997), (405, 52775), (675, 31665), (1125, 18999), (2025, 10555), (2111, 10125), (3375, 6333)]