21897780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:297

約数の個数: 96

約数和(自身を含む): 64662528

約数和(自身を除く): 42764748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 61, 62, 93, 122, 124, 155, 183, 186, 193, 244, 305, 310, 366, 372, 386, 465, 579, 610, 620, 732, 772, 915, 930, 965, 1158, 1220, 1830, 1860, 1891, 1930, 2316, 2895, 3660, 3782, 3860, 5673, 5790, 5983, 7564, 9455, 11346, 11580, 11773, 11966, 17949, 18910, 22692, 23546, 23932, 28365, 29915, 35319, 35898, 37820, 47092, 56730, 58865, 59830, 70638, 71796, 89745, 113460, 117730, 119660, 141276, 176595, 179490, 235460, 353190, 358980, 364963, 706380, 729926, 1094889, 1459852, 1824815, 2189778, 3649630, 4379556, 5474445, 7299260, 10948890, 21897780]

約数ペア:

[(1, 21897780), (2, 10948890), (3, 7299260), (4, 5474445), (5, 4379556), (6, 3649630), (10, 2189778), (12, 1824815), (15, 1459852), (20, 1094889), (30, 729926), (31, 706380), (60, 364963), (61, 358980), (62, 353190), (93, 235460), (122, 179490), (124, 176595), (155, 141276), (183, 119660), (186, 117730), (193, 113460), (244, 89745), (305, 71796), (310, 70638), (366, 59830), (372, 58865), (386, 56730), (465, 47092), (579, 37820), (610, 35898), (620, 35319), (732, 29915), (772, 28365), (915, 23932), (930, 23546), (965, 22692), (1158, 18910), (1220, 17949), (1830, 11966), (1860, 11773), (1891, 11580), (1930, 11346), (2316, 9455), (2895, 7564), (3660, 5983), (3782, 5790), (3860, 5673)]