28928925

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 55904160

約数和(自身を除く): 26975235

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 67, 75, 95, 101, 171, 201, 225, 285, 303, 335, 475, 505, 603, 855, 909, 1005, 1273, 1425, 1515, 1675, 1919, 2525, 3015, 3819, 4275, 4545, 5025, 5757, 6365, 6767, 7575, 9595, 11457, 15075, 17271, 19095, 20301, 22725, 28785, 31825, 33835, 47975, 57285, 60903, 86355, 95475, 101505, 128573, 143925, 169175, 286425, 304515, 385719, 431775, 507525, 642865, 1157157, 1522575, 1928595, 3214325, 5785785, 9642975, 28928925]

約数ペア:

[(1, 28928925), (3, 9642975), (5, 5785785), (9, 3214325), (15, 1928595), (19, 1522575), (25, 1157157), (45, 642865), (57, 507525), (67, 431775), (75, 385719), (95, 304515), (101, 286425), (171, 169175), (201, 143925), (225, 128573), (285, 101505), (303, 95475), (335, 86355), (475, 60903), (505, 57285), (603, 47975), (855, 33835), (909, 31825), (1005, 28785), (1273, 22725), (1425, 20301), (1515, 19095), (1675, 17271), (1919, 15075), (2525, 11457), (3015, 9595), (3819, 7575), (4275, 6767), (4545, 6365), (5025, 5757)]