21880452860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1\times {\mathrm{9319}}^1$

素因数の和:9907

約数の個数: 96

約数和(自身を含む): 54313082880

約数和(自身を除く): 32432630020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 541, 620, 868, 1082, 1085, 2164, 2170, 2705, 3787, 4340, 5410, 7574, 9319, 10820, 15148, 16771, 18638, 18935, 33542, 37276, 37870, 46595, 65233, 67084, 75740, 83855, 93190, 117397, 130466, 167710, 186380, 234794, 260932, 288889, 326165, 335420, 469588, 577778, 586985, 652330, 1155556, 1173970, 1304660, 1444445, 2022223, 2347940, 2888890, 4044446, 5041579, 5777780, 8088892, 10083158, 10111115, 20166316, 20222230, 25207895, 35291053, 40444460, 50415790, 70582106, 100831580, 141164212, 156288949, 176455265, 312577898, 352910530, 625155796, 705821060, 781444745, 1094022643, 1562889490, 2188045286, 3125778980, 4376090572, 5470113215, 10940226430, 21880452860]

約数ペア:

[(1, 21880452860), (2, 10940226430), (4, 5470113215), (5, 4376090572), (7, 3125778980), (10, 2188045286), (14, 1562889490), (20, 1094022643), (28, 781444745), (31, 705821060), (35, 625155796), (62, 352910530), (70, 312577898), (124, 176455265), (140, 156288949), (155, 141164212), (217, 100831580), (310, 70582106), (434, 50415790), (541, 40444460), (620, 35291053), (868, 25207895), (1082, 20222230), (1085, 20166316), (2164, 10111115), (2170, 10083158), (2705, 8088892), (3787, 5777780), (4340, 5041579), (5410, 4044446), (7574, 2888890), (9319, 2347940), (10820, 2022223), (15148, 1444445), (16771, 1304660), (18638, 1173970), (18935, 1155556), (33542, 652330), (37276, 586985), (37870, 577778), (46595, 469588), (65233, 335420), (67084, 326165), (75740, 288889), (83855, 260932), (93190, 234794), (117397, 186380), (130466, 167710)]