21046740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:270

約数の個数: 144

約数和(自身を含む): 70070784

約数和(自身を除く): 49024044

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 121, 130, 132, 143, 156, 165, 195, 220, 223, 242, 260, 286, 330, 363, 390, 429, 446, 484, 572, 605, 660, 669, 715, 726, 780, 858, 892, 1115, 1210, 1338, 1430, 1452, 1573, 1716, 1815, 2145, 2230, 2420, 2453, 2676, 2860, 2899, 3146, 3345, 3630, 4290, 4460, 4719, 4906, 5798, 6292, 6690, 7260, 7359, 7865, 8580, 8697, 9438, 9812, 11596, 12265, 13380, 14495, 14718, 15730, 17394, 18876, 23595, 24530, 26983, 28990, 29436, 31460, 31889, 34788, 36795, 43485, 47190, 49060, 53966, 57980, 63778, 73590, 80949, 86970, 94380, 95667, 107932, 127556, 134915, 147180, 159445, 161898, 173940, 191334, 269830, 318890, 323796, 350779, 382668, 404745, 478335, 539660, 637780, 701558, 809490, 956670, 1052337, 1403116, 1618980, 1753895, 1913340, 2104674, 3507790, 4209348, 5261685, 7015580, 10523370, 21046740]

約数ペア:

[(1, 21046740), (2, 10523370), (3, 7015580), (4, 5261685), (5, 4209348), (6, 3507790), (10, 2104674), (11, 1913340), (12, 1753895), (13, 1618980), (15, 1403116), (20, 1052337), (22, 956670), (26, 809490), (30, 701558), (33, 637780), (39, 539660), (44, 478335), (52, 404745), (55, 382668), (60, 350779), (65, 323796), (66, 318890), (78, 269830), (110, 191334), (121, 173940), (130, 161898), (132, 159445), (143, 147180), (156, 134915), (165, 127556), (195, 107932), (220, 95667), (223, 94380), (242, 86970), (260, 80949), (286, 73590), (330, 63778), (363, 57980), (390, 53966), (429, 49060), (446, 47190), (484, 43485), (572, 36795), (605, 34788), (660, 31889), (669, 31460), (715, 29436), (726, 28990), (780, 26983), (858, 24530), (892, 23595), (1115, 18876), (1210, 17394), (1338, 15730), (1430, 14718), (1452, 14495), (1573, 13380), (1716, 12265), (1815, 11596), (2145, 9812), (2230, 9438), (2420, 8697), (2453, 8580), (2676, 7865), (2860, 7359), (2899, 7260), (3146, 6690), (3345, 6292), (3630, 5798), (4290, 4906), (4460, 4719)]