71148980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{919}}^1$

素因数の和:1021

約数の個数: 72

約数和(自身を含む): 176198400

約数和(自身を除く): 105049420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 316, 395, 490, 553, 790, 919, 980, 1106, 1580, 1838, 2212, 2765, 3676, 3871, 4595, 5530, 6433, 7742, 9190, 11060, 12866, 15484, 18380, 19355, 25732, 32165, 38710, 45031, 64330, 72601, 77420, 90062, 128660, 145202, 180124, 225155, 290404, 363005, 450310, 508207, 726010, 900620, 1016414, 1452020, 2032828, 2541035, 3557449, 5082070, 7114898, 10164140, 14229796, 17787245, 35574490, 71148980]

約数ペア:

[(1, 71148980), (2, 35574490), (4, 17787245), (5, 14229796), (7, 10164140), (10, 7114898), (14, 5082070), (20, 3557449), (28, 2541035), (35, 2032828), (49, 1452020), (70, 1016414), (79, 900620), (98, 726010), (140, 508207), (158, 450310), (196, 363005), (245, 290404), (316, 225155), (395, 180124), (490, 145202), (553, 128660), (790, 90062), (919, 77420), (980, 72601), (1106, 64330), (1580, 45031), (1838, 38710), (2212, 32165), (2765, 25732), (3676, 19355), (3871, 18380), (4595, 15484), (5530, 12866), (6433, 11060), (7742, 9190)]