128537780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4231}}^1$

素因数の和:4285

約数の個数: 72

約数和(自身を含む): 324205056

約数和(自身を除く): 195667276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 3038, 4231, 4340, 6076, 7595, 8462, 15190, 16924, 21155, 29617, 30380, 42310, 59234, 84620, 118468, 131161, 148085, 207319, 262322, 296170, 414638, 524644, 592340, 655805, 829276, 918127, 1036595, 1311610, 1836254, 2073190, 2623220, 3672508, 4146380, 4590635, 6426889, 9181270, 12853778, 18362540, 25707556, 32134445, 64268890, 128537780]

約数ペア:

[(1, 128537780), (2, 64268890), (4, 32134445), (5, 25707556), (7, 18362540), (10, 12853778), (14, 9181270), (20, 6426889), (28, 4590635), (31, 4146380), (35, 3672508), (49, 2623220), (62, 2073190), (70, 1836254), (98, 1311610), (124, 1036595), (140, 918127), (155, 829276), (196, 655805), (217, 592340), (245, 524644), (310, 414638), (434, 296170), (490, 262322), (620, 207319), (868, 148085), (980, 131161), (1085, 118468), (1519, 84620), (2170, 59234), (3038, 42310), (4231, 30380), (4340, 29617), (6076, 21155), (7595, 16924), (8462, 15190)]