19957980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 192

約数和(自身を含む): 69995520

約数和(自身を除く): 50037540

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 41, 42, 57, 60, 61, 70, 76, 82, 84, 95, 105, 114, 122, 123, 133, 140, 164, 183, 190, 205, 210, 228, 244, 246, 266, 285, 287, 305, 366, 380, 399, 410, 420, 427, 492, 532, 570, 574, 610, 615, 665, 732, 779, 798, 820, 854, 861, 915, 1140, 1148, 1159, 1220, 1230, 1281, 1330, 1435, 1558, 1596, 1708, 1722, 1830, 1995, 2135, 2318, 2337, 2460, 2501, 2562, 2660, 2870, 3116, 3444, 3477, 3660, 3895, 3990, 4270, 4305, 4636, 4674, 5002, 5124, 5453, 5740, 5795, 6405, 6954, 7503, 7790, 7980, 8113, 8540, 8610, 9348, 10004, 10906, 11590, 11685, 12505, 12810, 13908, 15006, 15580, 16226, 16359, 17220, 17385, 17507, 21812, 23180, 23370, 24339, 25010, 25620, 27265, 30012, 32452, 32718, 34770, 35014, 37515, 40565, 46740, 47519, 48678, 50020, 52521, 54530, 65436, 69540, 70028, 75030, 81130, 81795, 87535, 95038, 97356, 105042, 109060, 121695, 142557, 150060, 162260, 163590, 175070, 190076, 210084, 237595, 243390, 262605, 285114, 327180, 332633, 350140, 475190, 486780, 525210, 570228, 665266, 712785, 950380, 997899, 1050420, 1330532, 1425570, 1663165, 1995798, 2851140, 3326330, 3991596, 4989495, 6652660, 9978990, 19957980]

約数ペア:

[(1, 19957980), (2, 9978990), (3, 6652660), (4, 4989495), (5, 3991596), (6, 3326330), (7, 2851140), (10, 1995798), (12, 1663165), (14, 1425570), (15, 1330532), (19, 1050420), (20, 997899), (21, 950380), (28, 712785), (30, 665266), (35, 570228), (38, 525210), (41, 486780), (42, 475190), (57, 350140), (60, 332633), (61, 327180), (70, 285114), (76, 262605), (82, 243390), (84, 237595), (95, 210084), (105, 190076), (114, 175070), (122, 163590), (123, 162260), (133, 150060), (140, 142557), (164, 121695), (183, 109060), (190, 105042), (205, 97356), (210, 95038), (228, 87535), (244, 81795), (246, 81130), (266, 75030), (285, 70028), (287, 69540), (305, 65436), (366, 54530), (380, 52521), (399, 50020), (410, 48678), (420, 47519), (427, 46740), (492, 40565), (532, 37515), (570, 35014), (574, 34770), (610, 32718), (615, 32452), (665, 30012), (732, 27265), (779, 25620), (798, 25010), (820, 24339), (854, 23370), (861, 23180), (915, 21812), (1140, 17507), (1148, 17385), (1159, 17220), (1220, 16359), (1230, 16226), (1281, 15580), (1330, 15006), (1435, 13908), (1558, 12810), (1596, 12505), (1708, 11685), (1722, 11590), (1830, 10906), (1995, 10004), (2135, 9348), (2318, 8610), (2337, 8540), (2460, 8113), (2501, 7980), (2562, 7790), (2660, 7503), (2870, 6954), (3116, 6405), (3444, 5795), (3477, 5740), (3660, 5453), (3895, 5124), (3990, 5002), (4270, 4674), (4305, 4636)]