21691760

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11789}}^1$

素因数の和:11825

約数の個数: 40

約数和(自身を含む): 52630560

約数和(自身を除く): 30938800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11789, 23578, 47156, 58945, 94312, 117890, 188624, 235780, 271147, 471560, 542294, 943120, 1084588, 1355735, 2169176, 2711470, 4338352, 5422940, 10845880, 21691760]

約数ペア:

[(1, 21691760), (2, 10845880), (4, 5422940), (5, 4338352), (8, 2711470), (10, 2169176), (16, 1355735), (20, 1084588), (23, 943120), (40, 542294), (46, 471560), (80, 271147), (92, 235780), (115, 188624), (184, 117890), (230, 94312), (368, 58945), (460, 47156), (920, 23578), (1840, 11789)]