21227580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 71705088

約数和(自身を除く): 50477508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 71, 90, 99, 110, 132, 142, 151, 165, 180, 198, 213, 220, 284, 302, 330, 355, 396, 426, 453, 495, 604, 639, 660, 710, 755, 781, 852, 906, 990, 1065, 1278, 1359, 1420, 1510, 1562, 1661, 1812, 1980, 2130, 2265, 2343, 2556, 2718, 3020, 3124, 3195, 3322, 3905, 4260, 4530, 4686, 4983, 5436, 6390, 6644, 6795, 7029, 7810, 8305, 9060, 9372, 9966, 10721, 11715, 12780, 13590, 14058, 14949, 15620, 16610, 19932, 21442, 23430, 24915, 27180, 28116, 29898, 32163, 33220, 35145, 42884, 46860, 49830, 53605, 59796, 64326, 70290, 74745, 96489, 99660, 107210, 117931, 128652, 140580, 149490, 160815, 192978, 214420, 235862, 298980, 321630, 353793, 385956, 471724, 482445, 589655, 643260, 707586, 964890, 1061379, 1179310, 1415172, 1768965, 1929780, 2122758, 2358620, 3537930, 4245516, 5306895, 7075860, 10613790, 21227580]

約数ペア:

[(1, 21227580), (2, 10613790), (3, 7075860), (4, 5306895), (5, 4245516), (6, 3537930), (9, 2358620), (10, 2122758), (11, 1929780), (12, 1768965), (15, 1415172), (18, 1179310), (20, 1061379), (22, 964890), (30, 707586), (33, 643260), (36, 589655), (44, 482445), (45, 471724), (55, 385956), (60, 353793), (66, 321630), (71, 298980), (90, 235862), (99, 214420), (110, 192978), (132, 160815), (142, 149490), (151, 140580), (165, 128652), (180, 117931), (198, 107210), (213, 99660), (220, 96489), (284, 74745), (302, 70290), (330, 64326), (355, 59796), (396, 53605), (426, 49830), (453, 46860), (495, 42884), (604, 35145), (639, 33220), (660, 32163), (710, 29898), (755, 28116), (781, 27180), (852, 24915), (906, 23430), (990, 21442), (1065, 19932), (1278, 16610), (1359, 15620), (1420, 14949), (1510, 14058), (1562, 13590), (1661, 12780), (1812, 11715), (1980, 10721), (2130, 9966), (2265, 9372), (2343, 9060), (2556, 8305), (2718, 7810), (3020, 7029), (3124, 6795), (3195, 6644), (3322, 6390), (3905, 5436), (4260, 4983), (4530, 4686)]