18992115

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{229}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 35162400

約数和(自身を除く): 16170285

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 97, 171, 229, 285, 291, 485, 687, 855, 873, 1145, 1455, 1843, 2061, 3435, 4351, 4365, 5529, 9215, 10305, 13053, 16587, 21755, 22213, 27645, 39159, 65265, 66639, 82935, 111065, 195795, 199917, 333195, 422047, 999585, 1266141, 2110235, 3798423, 6330705, 18992115]

約数ペア:

[(1, 18992115), (3, 6330705), (5, 3798423), (9, 2110235), (15, 1266141), (19, 999585), (45, 422047), (57, 333195), (95, 199917), (97, 195795), (171, 111065), (229, 82935), (285, 66639), (291, 65265), (485, 39159), (687, 27645), (855, 22213), (873, 21755), (1145, 16587), (1455, 13053), (1843, 10305), (2061, 9215), (3435, 5529), (4351, 4365)]