21910490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:507

約数の個数: 64

約数和(自身を含む): 48660480

約数和(自身を除く): 26749990

約数列:

[1, 2, 5, 7, 10, 14, 23, 31, 35, 46, 62, 70, 115, 155, 161, 217, 230, 310, 322, 434, 439, 713, 805, 878, 1085, 1426, 1610, 2170, 2195, 3073, 3565, 4390, 4991, 6146, 7130, 9982, 10097, 13609, 15365, 20194, 24955, 27218, 30730, 49910, 50485, 68045, 70679, 95263, 100970, 136090, 141358, 190526, 313007, 353395, 476315, 626014, 706790, 952630, 1565035, 2191049, 3130070, 4382098, 10955245, 21910490]

約数ペア:

[(1, 21910490), (2, 10955245), (5, 4382098), (7, 3130070), (10, 2191049), (14, 1565035), (23, 952630), (31, 706790), (35, 626014), (46, 476315), (62, 353395), (70, 313007), (115, 190526), (155, 141358), (161, 136090), (217, 100970), (230, 95263), (310, 70679), (322, 68045), (434, 50485), (439, 49910), (713, 30730), (805, 27218), (878, 24955), (1085, 20194), (1426, 15365), (1610, 13609), (2170, 10097), (2195, 9982), (3073, 7130), (3565, 6146), (4390, 4991)]