19686550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{977}}^1$

素因数の和:1033

約数の個数: 48

約数和(自身を含む): 40747392

約数和(自身を除く): 21060842

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 977, 1550, 1954, 2015, 4030, 4885, 9770, 10075, 12701, 20150, 24425, 25402, 30287, 48850, 60574, 63505, 127010, 151435, 302870, 317525, 393731, 635050, 757175, 787462, 1514350, 1968655, 3937310, 9843275, 19686550]

約数ペア:

[(1, 19686550), (2, 9843275), (5, 3937310), (10, 1968655), (13, 1514350), (25, 787462), (26, 757175), (31, 635050), (50, 393731), (62, 317525), (65, 302870), (130, 151435), (155, 127010), (310, 63505), (325, 60574), (403, 48850), (650, 30287), (775, 25402), (806, 24425), (977, 20150), (1550, 12701), (1954, 10075), (2015, 9770), (4030, 4885)]