21587306

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:614

約数の個数: 32

約数和(自身を含む): 37195200

約数和(自身を除く): 15607894

約数列:

[1, 2, 13, 19, 26, 38, 89, 178, 247, 491, 494, 982, 1157, 1691, 2314, 3382, 6383, 9329, 12766, 18658, 21983, 43699, 43966, 87398, 121277, 242554, 568087, 830281, 1136174, 1660562, 10793653, 21587306]

約数ペア:

[(1, 21587306), (2, 10793653), (13, 1660562), (19, 1136174), (26, 830281), (38, 568087), (89, 242554), (178, 121277), (247, 87398), (491, 43966), (494, 43699), (982, 21983), (1157, 18658), (1691, 12766), (2314, 9329), (3382, 6383)]