642345

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 1192320

約数和(自身を除く): 549975

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 229, 255, 561, 687, 935, 1145, 2519, 2805, 3435, 3893, 7557, 11679, 12595, 19465, 37785, 42823, 58395, 128469, 214115, 642345]

約数ペア:

[(1, 642345), (3, 214115), (5, 128469), (11, 58395), (15, 42823), (17, 37785), (33, 19465), (51, 12595), (55, 11679), (85, 7557), (165, 3893), (187, 3435), (229, 2805), (255, 2519), (561, 1145), (687, 935)]