21312868080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{207971}}^1$

素因数の和:208055

約数の個数: 160

約数和(自身を含む): 76746659328

約数和(自身を除く): 55433791248

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 61, 70, 80, 84, 105, 112, 120, 122, 140, 168, 183, 210, 240, 244, 280, 305, 336, 366, 420, 427, 488, 560, 610, 732, 840, 854, 915, 976, 1220, 1281, 1464, 1680, 1708, 1830, 2135, 2440, 2562, 2928, 3416, 3660, 4270, 4880, 5124, 6405, 6832, 7320, 8540, 10248, 12810, 14640, 17080, 20496, 25620, 34160, 51240, 102480, 207971, 415942, 623913, 831884, 1039855, 1247826, 1455797, 1663768, 2079710, 2495652, 2911594, 3119565, 3327536, 4159420, 4367391, 4991304, 5823188, 6239130, 7278985, 8318840, 8734782, 9982608, 11646376, 12478260, 12686231, 14557970, 16637680, 17469564, 21836955, 23292752, 24956520, 25372462, 29115940, 34939128, 38058693, 43673910, 49913040, 50744924, 58231880, 63431155, 69878256, 76117386, 87347820, 88803617, 101489848, 116463760, 126862310, 152234772, 174695640, 177607234, 190293465, 202979696, 253724620, 266410851, 304469544, 349391280, 355214468, 380586930, 444018085, 507449240, 532821702, 608939088, 710428936, 761173860, 888036170, 1014898480, 1065643404, 1332054255, 1420857872, 1522347720, 1776072340, 2131286808, 2664108510, 3044695440, 3552144680, 4262573616, 5328217020, 7104289360, 10656434040, 21312868080]

約数ペア:

[(1, 21312868080), (2, 10656434040), (3, 7104289360), (4, 5328217020), (5, 4262573616), (6, 3552144680), (7, 3044695440), (8, 2664108510), (10, 2131286808), (12, 1776072340), (14, 1522347720), (15, 1420857872), (16, 1332054255), (20, 1065643404), (21, 1014898480), (24, 888036170), (28, 761173860), (30, 710428936), (35, 608939088), (40, 532821702), (42, 507449240), (48, 444018085), (56, 380586930), (60, 355214468), (61, 349391280), (70, 304469544), (80, 266410851), (84, 253724620), (105, 202979696), (112, 190293465), (120, 177607234), (122, 174695640), (140, 152234772), (168, 126862310), (183, 116463760), (210, 101489848), (240, 88803617), (244, 87347820), (280, 76117386), (305, 69878256), (336, 63431155), (366, 58231880), (420, 50744924), (427, 49913040), (488, 43673910), (560, 38058693), (610, 34939128), (732, 29115940), (840, 25372462), (854, 24956520), (915, 23292752), (976, 21836955), (1220, 17469564), (1281, 16637680), (1464, 14557970), (1680, 12686231), (1708, 12478260), (1830, 11646376), (2135, 9982608), (2440, 8734782), (2562, 8318840), (2928, 7278985), (3416, 6239130), (3660, 5823188), (4270, 4991304), (4880, 4367391), (5124, 4159420), (6405, 3327536), (6832, 3119565), (7320, 2911594), (8540, 2495652), (10248, 2079710), (12810, 1663768), (14640, 1455797), (17080, 1247826), (20496, 1039855), (25620, 831884), (34160, 623913), (51240, 415942), (102480, 207971)]