278172540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:696

約数の個数: 144

約数和(自身を含む): 895440000

約数和(自身を除く): 617267460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 163, 171, 180, 190, 228, 285, 326, 342, 380, 489, 499, 570, 652, 684, 815, 855, 978, 998, 1140, 1467, 1497, 1630, 1710, 1956, 1996, 2445, 2495, 2934, 2994, 3097, 3260, 3420, 4491, 4890, 4990, 5868, 5988, 6194, 7335, 7485, 8982, 9291, 9481, 9780, 9980, 12388, 14670, 14970, 15485, 17964, 18582, 18962, 22455, 27873, 28443, 29340, 29940, 30970, 37164, 37924, 44910, 46455, 47405, 55746, 56886, 61940, 81337, 85329, 89820, 92910, 94810, 111492, 113772, 139365, 142215, 162674, 170658, 185820, 189620, 244011, 278730, 284430, 325348, 341316, 406685, 426645, 488022, 557460, 568860, 732033, 813370, 853290, 976044, 1220055, 1464066, 1545403, 1626740, 1706580, 2440110, 2928132, 3090806, 3660165, 4636209, 4880220, 6181612, 7320330, 7727015, 9272418, 13908627, 14640660, 15454030, 18544836, 23181045, 27817254, 30908060, 46362090, 55634508, 69543135, 92724180, 139086270, 278172540]

約数ペア:

[(1, 278172540), (2, 139086270), (3, 92724180), (4, 69543135), (5, 55634508), (6, 46362090), (9, 30908060), (10, 27817254), (12, 23181045), (15, 18544836), (18, 15454030), (19, 14640660), (20, 13908627), (30, 9272418), (36, 7727015), (38, 7320330), (45, 6181612), (57, 4880220), (60, 4636209), (76, 3660165), (90, 3090806), (95, 2928132), (114, 2440110), (163, 1706580), (171, 1626740), (180, 1545403), (190, 1464066), (228, 1220055), (285, 976044), (326, 853290), (342, 813370), (380, 732033), (489, 568860), (499, 557460), (570, 488022), (652, 426645), (684, 406685), (815, 341316), (855, 325348), (978, 284430), (998, 278730), (1140, 244011), (1467, 189620), (1497, 185820), (1630, 170658), (1710, 162674), (1956, 142215), (1996, 139365), (2445, 113772), (2495, 111492), (2934, 94810), (2994, 92910), (3097, 89820), (3260, 85329), (3420, 81337), (4491, 61940), (4890, 56886), (4990, 55746), (5868, 47405), (5988, 46455), (6194, 44910), (7335, 37924), (7485, 37164), (8982, 30970), (9291, 29940), (9481, 29340), (9780, 28443), (9980, 27873), (12388, 22455), (14670, 18962), (14970, 18582), (15485, 17964)]