21514860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 49246740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 79, 85, 89, 90, 102, 153, 158, 170, 178, 180, 204, 237, 255, 267, 306, 316, 340, 356, 395, 445, 474, 510, 534, 612, 711, 765, 790, 801, 890, 948, 1020, 1068, 1185, 1335, 1343, 1422, 1513, 1530, 1580, 1602, 1780, 2370, 2670, 2686, 2844, 3026, 3060, 3204, 3555, 4005, 4029, 4539, 4740, 5340, 5372, 6052, 6715, 7031, 7110, 7565, 8010, 8058, 9078, 12087, 13430, 13617, 14062, 14220, 15130, 16020, 16116, 18156, 20145, 21093, 22695, 24174, 26860, 27234, 28124, 30260, 35155, 40290, 42186, 45390, 48348, 54468, 60435, 63279, 68085, 70310, 80580, 84372, 90780, 105465, 119527, 120870, 126558, 136170, 140620, 210930, 239054, 241740, 253116, 272340, 316395, 358581, 421860, 478108, 597635, 632790, 717162, 1075743, 1195270, 1265580, 1434324, 1792905, 2151486, 2390540, 3585810, 4302972, 5378715, 7171620, 10757430, 21514860]

約数ペア:

[(1, 21514860), (2, 10757430), (3, 7171620), (4, 5378715), (5, 4302972), (6, 3585810), (9, 2390540), (10, 2151486), (12, 1792905), (15, 1434324), (17, 1265580), (18, 1195270), (20, 1075743), (30, 717162), (34, 632790), (36, 597635), (45, 478108), (51, 421860), (60, 358581), (68, 316395), (79, 272340), (85, 253116), (89, 241740), (90, 239054), (102, 210930), (153, 140620), (158, 136170), (170, 126558), (178, 120870), (180, 119527), (204, 105465), (237, 90780), (255, 84372), (267, 80580), (306, 70310), (316, 68085), (340, 63279), (356, 60435), (395, 54468), (445, 48348), (474, 45390), (510, 42186), (534, 40290), (612, 35155), (711, 30260), (765, 28124), (790, 27234), (801, 26860), (890, 24174), (948, 22695), (1020, 21093), (1068, 20145), (1185, 18156), (1335, 16116), (1343, 16020), (1422, 15130), (1513, 14220), (1530, 14062), (1580, 13617), (1602, 13430), (1780, 12087), (2370, 9078), (2670, 8058), (2686, 8010), (2844, 7565), (3026, 7110), (3060, 7031), (3204, 6715), (3555, 6052), (4005, 5372), (4029, 5340), (4539, 4740)]