28778580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2621}}^1$

素因数の和:2697

約数の個数: 72

約数和(自身を含む): 88759944

約数和(自身を除く): 59981364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2196, 2621, 2745, 3660, 5242, 5490, 7863, 10484, 10980, 13105, 15726, 23589, 26210, 31452, 39315, 47178, 52420, 78630, 94356, 117945, 157260, 159881, 235890, 319762, 471780, 479643, 639524, 799405, 959286, 1438929, 1598810, 1918572, 2398215, 2877858, 3197620, 4796430, 5755716, 7194645, 9592860, 14389290, 28778580]

約数ペア:

[(1, 28778580), (2, 14389290), (3, 9592860), (4, 7194645), (5, 5755716), (6, 4796430), (9, 3197620), (10, 2877858), (12, 2398215), (15, 1918572), (18, 1598810), (20, 1438929), (30, 959286), (36, 799405), (45, 639524), (60, 479643), (61, 471780), (90, 319762), (122, 235890), (180, 159881), (183, 157260), (244, 117945), (305, 94356), (366, 78630), (549, 52420), (610, 47178), (732, 39315), (915, 31452), (1098, 26210), (1220, 23589), (1830, 15726), (2196, 13105), (2621, 10980), (2745, 10484), (3660, 7863), (5242, 5490)]