21378914

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 35890560

約数和(自身を除く): 14511646

約数列:

[1, 2, 19, 23, 38, 46, 61, 122, 401, 437, 802, 874, 1159, 1403, 2318, 2806, 7619, 9223, 15238, 18446, 24461, 26657, 48922, 53314, 175237, 350474, 464759, 562603, 929518, 1125206, 10689457, 21378914]

約数ペア:

[(1, 21378914), (2, 10689457), (19, 1125206), (23, 929518), (38, 562603), (46, 464759), (61, 350474), (122, 175237), (401, 53314), (437, 48922), (802, 26657), (874, 24461), (1159, 18446), (1403, 15238), (2318, 9223), (2806, 7619)]