18958940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{947}}^1$

素因数の和:987

約数の個数: 96

約数和(自身を含む): 53512704

約数和(自身を除く): 34553764

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 130, 140, 143, 154, 182, 220, 260, 286, 308, 364, 385, 455, 572, 715, 770, 910, 947, 1001, 1430, 1540, 1820, 1894, 2002, 2860, 3788, 4004, 4735, 5005, 6629, 9470, 10010, 10417, 12311, 13258, 18940, 20020, 20834, 24622, 26516, 33145, 41668, 49244, 52085, 61555, 66290, 72919, 86177, 104170, 123110, 132580, 135421, 145838, 172354, 208340, 246220, 270842, 291676, 344708, 364595, 430885, 541684, 677105, 729190, 861770, 947947, 1354210, 1458380, 1723540, 1895894, 2708420, 3791788, 4739735, 9479470, 18958940]

約数ペア:

[(1, 18958940), (2, 9479470), (4, 4739735), (5, 3791788), (7, 2708420), (10, 1895894), (11, 1723540), (13, 1458380), (14, 1354210), (20, 947947), (22, 861770), (26, 729190), (28, 677105), (35, 541684), (44, 430885), (52, 364595), (55, 344708), (65, 291676), (70, 270842), (77, 246220), (91, 208340), (110, 172354), (130, 145838), (140, 135421), (143, 132580), (154, 123110), (182, 104170), (220, 86177), (260, 72919), (286, 66290), (308, 61555), (364, 52085), (385, 49244), (455, 41668), (572, 33145), (715, 26516), (770, 24622), (910, 20834), (947, 20020), (1001, 18940), (1430, 13258), (1540, 12311), (1820, 10417), (1894, 10010), (2002, 9470), (2860, 6629), (3788, 5005), (4004, 4735)]