28195740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 108

約数和(自身を含む): 88917192

約数和(自身を除く): 60721452

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 163, 180, 186, 279, 310, 326, 372, 465, 489, 558, 620, 652, 815, 930, 961, 978, 1116, 1395, 1467, 1630, 1860, 1922, 1956, 2445, 2790, 2883, 2934, 3260, 3844, 4805, 4890, 5053, 5580, 5766, 5868, 7335, 8649, 9610, 9780, 10106, 11532, 14415, 14670, 15159, 17298, 19220, 20212, 25265, 28830, 29340, 30318, 34596, 43245, 45477, 50530, 57660, 60636, 75795, 86490, 90954, 101060, 151590, 156643, 172980, 181908, 227385, 303180, 313286, 454770, 469929, 626572, 783215, 909540, 939858, 1409787, 1566430, 1879716, 2349645, 2819574, 3132860, 4699290, 5639148, 7048935, 9398580, 14097870, 28195740]

約数ペア:

[(1, 28195740), (2, 14097870), (3, 9398580), (4, 7048935), (5, 5639148), (6, 4699290), (9, 3132860), (10, 2819574), (12, 2349645), (15, 1879716), (18, 1566430), (20, 1409787), (30, 939858), (31, 909540), (36, 783215), (45, 626572), (60, 469929), (62, 454770), (90, 313286), (93, 303180), (124, 227385), (155, 181908), (163, 172980), (180, 156643), (186, 151590), (279, 101060), (310, 90954), (326, 86490), (372, 75795), (465, 60636), (489, 57660), (558, 50530), (620, 45477), (652, 43245), (815, 34596), (930, 30318), (961, 29340), (978, 28830), (1116, 25265), (1395, 20212), (1467, 19220), (1630, 17298), (1860, 15159), (1922, 14670), (1956, 14415), (2445, 11532), (2790, 10106), (2883, 9780), (2934, 9610), (3260, 8649), (3844, 7335), (4805, 5868), (4890, 5766), (5053, 5580)]