128620240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{239}}^1$

素因数の和:321

約数の個数: 120

約数和(自身を含む): 354620160

約数和(自身を除く): 225999920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 239, 248, 280, 310, 434, 478, 496, 560, 620, 868, 956, 961, 1085, 1195, 1240, 1673, 1736, 1912, 1922, 2170, 2390, 2480, 3346, 3472, 3824, 3844, 4340, 4780, 4805, 6692, 6727, 7409, 7688, 8365, 8680, 9560, 9610, 13384, 13454, 14818, 15376, 16730, 17360, 19120, 19220, 26768, 26908, 29636, 33460, 33635, 37045, 38440, 51863, 53816, 59272, 66920, 67270, 74090, 76880, 103726, 107632, 118544, 133840, 134540, 148180, 207452, 229679, 259315, 269080, 296360, 414904, 459358, 518630, 538160, 592720, 829808, 918716, 1037260, 1148395, 1607753, 1837432, 2074520, 2296790, 3215506, 3674864, 4149040, 4593580, 6431012, 8038765, 9187160, 12862024, 16077530, 18374320, 25724048, 32155060, 64310120, 128620240]

約数ペア:

[(1, 128620240), (2, 64310120), (4, 32155060), (5, 25724048), (7, 18374320), (8, 16077530), (10, 12862024), (14, 9187160), (16, 8038765), (20, 6431012), (28, 4593580), (31, 4149040), (35, 3674864), (40, 3215506), (56, 2296790), (62, 2074520), (70, 1837432), (80, 1607753), (112, 1148395), (124, 1037260), (140, 918716), (155, 829808), (217, 592720), (239, 538160), (248, 518630), (280, 459358), (310, 414904), (434, 296360), (478, 269080), (496, 259315), (560, 229679), (620, 207452), (868, 148180), (956, 134540), (961, 133840), (1085, 118544), (1195, 107632), (1240, 103726), (1673, 76880), (1736, 74090), (1912, 67270), (1922, 66920), (2170, 59272), (2390, 53816), (2480, 51863), (3346, 38440), (3472, 37045), (3824, 33635), (3844, 33460), (4340, 29636), (4780, 26908), (4805, 26768), (6692, 19220), (6727, 19120), (7409, 17360), (7688, 16730), (8365, 15376), (8680, 14818), (9560, 13454), (9610, 13384)]