20111910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 128

約数和(自身を含む): 60963840

約数和(自身を除く): 40851930

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 53, 65, 70, 78, 91, 105, 106, 130, 139, 159, 182, 195, 210, 265, 273, 278, 318, 371, 390, 417, 455, 530, 546, 689, 695, 742, 795, 834, 910, 973, 1113, 1365, 1378, 1390, 1590, 1807, 1855, 1946, 2067, 2085, 2226, 2730, 2919, 3445, 3614, 3710, 4134, 4170, 4823, 4865, 5421, 5565, 5838, 6890, 7367, 9035, 9646, 9730, 10335, 10842, 11130, 12649, 14469, 14595, 14734, 18070, 20670, 22101, 24115, 25298, 27105, 28938, 29190, 36835, 37947, 44202, 48230, 51569, 54210, 63245, 72345, 73670, 75894, 95771, 103138, 110505, 126490, 144690, 154707, 189735, 191542, 221010, 257845, 287313, 309414, 379470, 478855, 515690, 574626, 670397, 773535, 957710, 1340794, 1436565, 1547070, 2011191, 2873130, 3351985, 4022382, 6703970, 10055955, 20111910]

約数ペア:

[(1, 20111910), (2, 10055955), (3, 6703970), (5, 4022382), (6, 3351985), (7, 2873130), (10, 2011191), (13, 1547070), (14, 1436565), (15, 1340794), (21, 957710), (26, 773535), (30, 670397), (35, 574626), (39, 515690), (42, 478855), (53, 379470), (65, 309414), (70, 287313), (78, 257845), (91, 221010), (105, 191542), (106, 189735), (130, 154707), (139, 144690), (159, 126490), (182, 110505), (195, 103138), (210, 95771), (265, 75894), (273, 73670), (278, 72345), (318, 63245), (371, 54210), (390, 51569), (417, 48230), (455, 44202), (530, 37947), (546, 36835), (689, 29190), (695, 28938), (742, 27105), (795, 25298), (834, 24115), (910, 22101), (973, 20670), (1113, 18070), (1365, 14734), (1378, 14595), (1390, 14469), (1590, 12649), (1807, 11130), (1855, 10842), (1946, 10335), (2067, 9730), (2085, 9646), (2226, 9035), (2730, 7367), (2919, 6890), (3445, 5838), (3614, 5565), (3710, 5421), (4134, 4865), (4170, 4823)]