21587930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3389}}^1$

素因数の和:3423

約数の個数: 48

約数和(自身を含む): 48693960

約数和(自身を除く): 27106030

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3389, 6370, 6778, 16945, 23723, 33890, 44057, 47446, 88114, 118615, 166061, 220285, 237230, 308399, 332122, 440570, 616798, 830305, 1541995, 1660610, 2158793, 3083990, 4317586, 10793965, 21587930]

約数ペア:

[(1, 21587930), (2, 10793965), (5, 4317586), (7, 3083990), (10, 2158793), (13, 1660610), (14, 1541995), (26, 830305), (35, 616798), (49, 440570), (65, 332122), (70, 308399), (91, 237230), (98, 220285), (130, 166061), (182, 118615), (245, 88114), (455, 47446), (490, 44057), (637, 33890), (910, 23723), (1274, 16945), (3185, 6778), (3389, 6370)]