21337900

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 48816320

約数和(自身を除く): 27478420

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 73, 74, 79, 100, 146, 148, 158, 185, 292, 316, 365, 370, 395, 730, 740, 790, 925, 1460, 1580, 1825, 1850, 1975, 2701, 2923, 3650, 3700, 3950, 5402, 5767, 5846, 7300, 7900, 10804, 11534, 11692, 13505, 14615, 23068, 27010, 28835, 29230, 54020, 57670, 58460, 67525, 73075, 115340, 135050, 144175, 146150, 213379, 270100, 288350, 292300, 426758, 576700, 853516, 1066895, 2133790, 4267580, 5334475, 10668950, 21337900]

約数ペア:

[(1, 21337900), (2, 10668950), (4, 5334475), (5, 4267580), (10, 2133790), (20, 1066895), (25, 853516), (37, 576700), (50, 426758), (73, 292300), (74, 288350), (79, 270100), (100, 213379), (146, 146150), (148, 144175), (158, 135050), (185, 115340), (292, 73075), (316, 67525), (365, 58460), (370, 57670), (395, 54020), (730, 29230), (740, 28835), (790, 27010), (925, 23068), (1460, 14615), (1580, 13505), (1825, 11692), (1850, 11534), (1975, 10804), (2701, 7900), (2923, 7300), (3650, 5846), (3700, 5767), (3950, 5402)]