1280720340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{43651}}^1$

素因数の和:43829

約数の個数: 72

約数和(自身を含む): 3908774688

約数和(自身を除く): 2628054348

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 815, 978, 1467, 1630, 1956, 2445, 2934, 3260, 4890, 5868, 7335, 9780, 14670, 29340, 43651, 87302, 130953, 174604, 218255, 261906, 392859, 436510, 523812, 654765, 785718, 873020, 1309530, 1571436, 1964295, 2619060, 3928590, 7115113, 7857180, 14230226, 21345339, 28460452, 35575565, 42690678, 64036017, 71151130, 85381356, 106726695, 128072034, 142302260, 213453390, 256144068, 320180085, 426906780, 640360170, 1280720340]

約数ペア:

[(1, 1280720340), (2, 640360170), (3, 426906780), (4, 320180085), (5, 256144068), (6, 213453390), (9, 142302260), (10, 128072034), (12, 106726695), (15, 85381356), (18, 71151130), (20, 64036017), (30, 42690678), (36, 35575565), (45, 28460452), (60, 21345339), (90, 14230226), (163, 7857180), (180, 7115113), (326, 3928590), (489, 2619060), (652, 1964295), (815, 1571436), (978, 1309530), (1467, 873020), (1630, 785718), (1956, 654765), (2445, 523812), (2934, 436510), (3260, 392859), (4890, 261906), (5868, 218255), (7335, 174604), (9780, 130953), (14670, 87302), (29340, 43651)]