64511840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21221}}^1$

素因数の和:21255

約数の個数: 48

約数和(自身を含む): 160438320

約数和(自身を除く): 95926480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 21221, 42442, 84884, 106105, 169768, 212210, 339536, 403199, 424420, 679072, 806398, 848840, 1612796, 1697680, 2015995, 3225592, 3395360, 4031990, 6451184, 8063980, 12902368, 16127960, 32255920, 64511840]

約数ペア:

[(1, 64511840), (2, 32255920), (4, 16127960), (5, 12902368), (8, 8063980), (10, 6451184), (16, 4031990), (19, 3395360), (20, 3225592), (32, 2015995), (38, 1697680), (40, 1612796), (76, 848840), (80, 806398), (95, 679072), (152, 424420), (160, 403199), (190, 339536), (304, 212210), (380, 169768), (608, 106105), (760, 84884), (1520, 42442), (3040, 21221)]