21652680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:343

約数の個数: 128

約数和(自身を含む): 75168000

約数和(自身を除く): 53515320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 149, 168, 173, 210, 280, 298, 346, 420, 447, 519, 596, 692, 745, 840, 865, 894, 1038, 1043, 1192, 1211, 1384, 1490, 1730, 1788, 2076, 2086, 2235, 2422, 2595, 2980, 3129, 3460, 3576, 3633, 4152, 4172, 4470, 4844, 5190, 5215, 5960, 6055, 6258, 6920, 7266, 8344, 8940, 9688, 10380, 10430, 12110, 12516, 14532, 15645, 17880, 18165, 20760, 20860, 24220, 25032, 25777, 29064, 31290, 36330, 41720, 48440, 51554, 62580, 72660, 77331, 103108, 125160, 128885, 145320, 154662, 180439, 206216, 257770, 309324, 360878, 386655, 515540, 541317, 618648, 721756, 773310, 902195, 1031080, 1082634, 1443512, 1546620, 1804390, 2165268, 2706585, 3093240, 3608780, 4330536, 5413170, 7217560, 10826340, 21652680]

約数ペア:

[(1, 21652680), (2, 10826340), (3, 7217560), (4, 5413170), (5, 4330536), (6, 3608780), (7, 3093240), (8, 2706585), (10, 2165268), (12, 1804390), (14, 1546620), (15, 1443512), (20, 1082634), (21, 1031080), (24, 902195), (28, 773310), (30, 721756), (35, 618648), (40, 541317), (42, 515540), (56, 386655), (60, 360878), (70, 309324), (84, 257770), (105, 206216), (120, 180439), (140, 154662), (149, 145320), (168, 128885), (173, 125160), (210, 103108), (280, 77331), (298, 72660), (346, 62580), (420, 51554), (447, 48440), (519, 41720), (596, 36330), (692, 31290), (745, 29064), (840, 25777), (865, 25032), (894, 24220), (1038, 20860), (1043, 20760), (1192, 18165), (1211, 17880), (1384, 15645), (1490, 14532), (1730, 12516), (1788, 12110), (2076, 10430), (2086, 10380), (2235, 9688), (2422, 8940), (2595, 8344), (2980, 7266), (3129, 6920), (3460, 6258), (3576, 6055), (3633, 5960), (4152, 5215), (4172, 5190), (4470, 4844)]