641909840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{5101}}^1$

素因数の和:5149

約数の個数: 120

約数和(自身を含む): 1766985864

約数和(自身を除く): 1125076024

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 121, 130, 143, 176, 208, 220, 242, 260, 286, 440, 484, 520, 572, 605, 715, 880, 968, 1040, 1144, 1210, 1430, 1573, 1936, 2288, 2420, 2860, 3146, 4840, 5101, 5720, 6292, 7865, 9680, 10202, 11440, 12584, 15730, 20404, 25168, 25505, 31460, 40808, 51010, 56111, 62920, 66313, 81616, 102020, 112222, 125840, 132626, 204040, 224444, 265252, 280555, 331565, 408080, 448888, 530504, 561110, 617221, 663130, 729443, 897776, 1061008, 1122220, 1234442, 1326260, 1458886, 2244440, 2468884, 2652520, 2917772, 3086105, 3647215, 4488880, 4937768, 5305040, 5835544, 6172210, 7294430, 8023873, 9875536, 11671088, 12344420, 14588860, 16047746, 24688840, 29177720, 32095492, 40119365, 49377680, 58355440, 64190984, 80238730, 128381968, 160477460, 320954920, 641909840]

約数ペア:

[(1, 641909840), (2, 320954920), (4, 160477460), (5, 128381968), (8, 80238730), (10, 64190984), (11, 58355440), (13, 49377680), (16, 40119365), (20, 32095492), (22, 29177720), (26, 24688840), (40, 16047746), (44, 14588860), (52, 12344420), (55, 11671088), (65, 9875536), (80, 8023873), (88, 7294430), (104, 6172210), (110, 5835544), (121, 5305040), (130, 4937768), (143, 4488880), (176, 3647215), (208, 3086105), (220, 2917772), (242, 2652520), (260, 2468884), (286, 2244440), (440, 1458886), (484, 1326260), (520, 1234442), (572, 1122220), (605, 1061008), (715, 897776), (880, 729443), (968, 663130), (1040, 617221), (1144, 561110), (1210, 530504), (1430, 448888), (1573, 408080), (1936, 331565), (2288, 280555), (2420, 265252), (2860, 224444), (3146, 204040), (4840, 132626), (5101, 125840), (5720, 112222), (6292, 102020), (7865, 81616), (9680, 66313), (10202, 62920), (11440, 56111), (12584, 51010), (15730, 40808), (20404, 31460), (25168, 25505)]