25912900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:701

約数の個数: 72

約数和(自身を含む): 62607104

約数和(自身を除く): 36694204

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 130, 155, 260, 310, 325, 403, 620, 643, 650, 775, 806, 1286, 1300, 1550, 1612, 2015, 2572, 3100, 3215, 4030, 6430, 8060, 8359, 10075, 12860, 16075, 16718, 19933, 20150, 32150, 33436, 39866, 40300, 41795, 64300, 79732, 83590, 99665, 167180, 199330, 208975, 259129, 398660, 417950, 498325, 518258, 835900, 996650, 1036516, 1295645, 1993300, 2591290, 5182580, 6478225, 12956450, 25912900]

約数ペア:

[(1, 25912900), (2, 12956450), (4, 6478225), (5, 5182580), (10, 2591290), (13, 1993300), (20, 1295645), (25, 1036516), (26, 996650), (31, 835900), (50, 518258), (52, 498325), (62, 417950), (65, 398660), (100, 259129), (124, 208975), (130, 199330), (155, 167180), (260, 99665), (310, 83590), (325, 79732), (403, 64300), (620, 41795), (643, 40300), (650, 39866), (775, 33436), (806, 32150), (1286, 20150), (1300, 19933), (1550, 16718), (1612, 16075), (2015, 12860), (2572, 10075), (3100, 8359), (3215, 8060), (4030, 6430)]