18398965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 25675776

約数和(自身を除く): 7276811

約数列:

[1, 5, 13, 23, 31, 65, 115, 155, 299, 397, 403, 713, 1495, 1985, 2015, 3565, 5161, 9131, 9269, 12307, 25805, 45655, 46345, 61535, 118703, 159991, 283061, 593515, 799955, 1415305, 3679793, 18398965]

約数ペア:

[(1, 18398965), (5, 3679793), (13, 1415305), (23, 799955), (31, 593515), (65, 283061), (115, 159991), (155, 118703), (299, 61535), (397, 46345), (403, 45655), (713, 25805), (1495, 12307), (1985, 9269), (2015, 9131), (3565, 5161)]