30688040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{271}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 73440000

約数和(自身を除く): 42751960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 190, 271, 298, 380, 542, 596, 745, 760, 1084, 1192, 1355, 1490, 2168, 2710, 2831, 2980, 5149, 5420, 5662, 5960, 10298, 10840, 11324, 14155, 20596, 22648, 25745, 28310, 40379, 41192, 51490, 56620, 80758, 102980, 113240, 161516, 201895, 205960, 323032, 403790, 767201, 807580, 1534402, 1615160, 3068804, 3836005, 6137608, 7672010, 15344020, 30688040]

約数ペア:

[(1, 30688040), (2, 15344020), (4, 7672010), (5, 6137608), (8, 3836005), (10, 3068804), (19, 1615160), (20, 1534402), (38, 807580), (40, 767201), (76, 403790), (95, 323032), (149, 205960), (152, 201895), (190, 161516), (271, 113240), (298, 102980), (380, 80758), (542, 56620), (596, 51490), (745, 41192), (760, 40379), (1084, 28310), (1192, 25745), (1355, 22648), (1490, 20596), (2168, 14155), (2710, 11324), (2831, 10840), (2980, 10298), (5149, 5960), (5420, 5662)]