21291031680

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{347}}^1\times {\mathrm{31957}}^1$

素因数の和:32326

約数の個数: 128

約数和(自身を含む): 68062870080

約数和(自身を除く): 46771838400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 347, 384, 480, 640, 694, 960, 1041, 1388, 1735, 1920, 2082, 2776, 3470, 4164, 5205, 5552, 6940, 8328, 10410, 11104, 13880, 16656, 20820, 22208, 27760, 31957, 33312, 41640, 44416, 55520, 63914, 66624, 83280, 95871, 111040, 127828, 133248, 159785, 166560, 191742, 222080, 255656, 319570, 333120, 383484, 479355, 511312, 639140, 666240, 766968, 958710, 1022624, 1278280, 1533936, 1917420, 2045248, 2556560, 3067872, 3834840, 4090496, 5113120, 6135744, 7669680, 10226240, 11089079, 12271488, 15339360, 20452480, 22178158, 30678720, 33267237, 44356316, 55445395, 61357440, 66534474, 88712632, 110890790, 133068948, 166336185, 177425264, 221781580, 266137896, 332672370, 354850528, 443563160, 532275792, 665344740, 709701056, 887126320, 1064551584, 1330689480, 1419402112, 1774252640, 2129103168, 2661378960, 3548505280, 4258206336, 5322757920, 7097010560, 10645515840, 21291031680]

約数ペア:

[(1, 21291031680), (2, 10645515840), (3, 7097010560), (4, 5322757920), (5, 4258206336), (6, 3548505280), (8, 2661378960), (10, 2129103168), (12, 1774252640), (15, 1419402112), (16, 1330689480), (20, 1064551584), (24, 887126320), (30, 709701056), (32, 665344740), (40, 532275792), (48, 443563160), (60, 354850528), (64, 332672370), (80, 266137896), (96, 221781580), (120, 177425264), (128, 166336185), (160, 133068948), (192, 110890790), (240, 88712632), (320, 66534474), (347, 61357440), (384, 55445395), (480, 44356316), (640, 33267237), (694, 30678720), (960, 22178158), (1041, 20452480), (1388, 15339360), (1735, 12271488), (1920, 11089079), (2082, 10226240), (2776, 7669680), (3470, 6135744), (4164, 5113120), (5205, 4090496), (5552, 3834840), (6940, 3067872), (8328, 2556560), (10410, 2045248), (11104, 1917420), (13880, 1533936), (16656, 1278280), (20820, 1022624), (22208, 958710), (27760, 766968), (31957, 666240), (33312, 639140), (41640, 511312), (44416, 479355), (55520, 383484), (63914, 333120), (66624, 319570), (83280, 255656), (95871, 222080), (111040, 191742), (127828, 166560), (133248, 159785)]