15127980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 48921600

約数和(自身を除く): 33793620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 181, 199, 210, 362, 398, 420, 543, 597, 724, 796, 905, 995, 1086, 1194, 1267, 1393, 1810, 1990, 2172, 2388, 2534, 2715, 2786, 2985, 3620, 3801, 3980, 4179, 5068, 5430, 5572, 5970, 6335, 6965, 7602, 8358, 10860, 11940, 12670, 13930, 15204, 16716, 19005, 20895, 25340, 27860, 36019, 38010, 41790, 72038, 76020, 83580, 108057, 144076, 180095, 216114, 252133, 360190, 432228, 504266, 540285, 720380, 756399, 1008532, 1080570, 1260665, 1512798, 2161140, 2521330, 3025596, 3781995, 5042660, 7563990, 15127980]

約数ペア:

[(1, 15127980), (2, 7563990), (3, 5042660), (4, 3781995), (5, 3025596), (6, 2521330), (7, 2161140), (10, 1512798), (12, 1260665), (14, 1080570), (15, 1008532), (20, 756399), (21, 720380), (28, 540285), (30, 504266), (35, 432228), (42, 360190), (60, 252133), (70, 216114), (84, 180095), (105, 144076), (140, 108057), (181, 83580), (199, 76020), (210, 72038), (362, 41790), (398, 38010), (420, 36019), (543, 27860), (597, 25340), (724, 20895), (796, 19005), (905, 16716), (995, 15204), (1086, 13930), (1194, 12670), (1267, 11940), (1393, 10860), (1810, 8358), (1990, 7602), (2172, 6965), (2388, 6335), (2534, 5970), (2715, 5572), (2786, 5430), (2985, 5068), (3620, 4179), (3801, 3980)]