121987790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 241920000

約数和(自身を除く): 119932210

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 139, 149, 155, 190, 278, 298, 310, 589, 695, 745, 1178, 1390, 1490, 2641, 2831, 2945, 4309, 4619, 5282, 5662, 5890, 8618, 9238, 13205, 14155, 20711, 21545, 23095, 26410, 28310, 41422, 43090, 46190, 81871, 87761, 103555, 163742, 175522, 207110, 393509, 409355, 438805, 642041, 787018, 818710, 877610, 1284082, 1967545, 3210205, 3935090, 6420410, 12198779, 24397558, 60993895, 121987790]

約数ペア:

[(1, 121987790), (2, 60993895), (5, 24397558), (10, 12198779), (19, 6420410), (31, 3935090), (38, 3210205), (62, 1967545), (95, 1284082), (139, 877610), (149, 818710), (155, 787018), (190, 642041), (278, 438805), (298, 409355), (310, 393509), (589, 207110), (695, 175522), (745, 163742), (1178, 103555), (1390, 87761), (1490, 81871), (2641, 46190), (2831, 43090), (2945, 41422), (4309, 28310), (4619, 26410), (5282, 23095), (5662, 21545), (5890, 20711), (8618, 14155), (9238, 13205)]