28217750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 59664384

約数和(自身を除く): 31446634

約数列:

[1, 2, 5, 10, 11, 22, 25, 31, 50, 55, 62, 110, 125, 155, 250, 275, 310, 331, 341, 550, 662, 682, 775, 1375, 1550, 1655, 1705, 2750, 3310, 3410, 3641, 3875, 7282, 7750, 8275, 8525, 10261, 16550, 17050, 18205, 20522, 36410, 41375, 42625, 51305, 82750, 85250, 91025, 102610, 112871, 182050, 225742, 256525, 455125, 513050, 564355, 910250, 1128710, 1282625, 2565250, 2821775, 5643550, 14108875, 28217750]

約数ペア:

[(1, 28217750), (2, 14108875), (5, 5643550), (10, 2821775), (11, 2565250), (22, 1282625), (25, 1128710), (31, 910250), (50, 564355), (55, 513050), (62, 455125), (110, 256525), (125, 225742), (155, 182050), (250, 112871), (275, 102610), (310, 91025), (331, 85250), (341, 82750), (550, 51305), (662, 42625), (682, 41375), (775, 36410), (1375, 20522), (1550, 18205), (1655, 17050), (1705, 16550), (2750, 10261), (3310, 8525), (3410, 8275), (3641, 7750), (3875, 7282)]