9978990

素因数分解:

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

素因数の和:138

約数の個数: 128

約数和(自身を含む): 29998080

約数和(自身を除く): 20019090

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 41, 42, 57, 61, 70, 82, 95, 105, 114, 122, 123, 133, 183, 190, 205, 210, 246, 266, 285, 287, 305, 366, 399, 410, 427, 570, 574, 610, 615, 665, 779, 798, 854, 861, 915, 1159, 1230, 1281, 1330, 1435, 1558, 1722, 1830, 1995, 2135, 2318, 2337, 2501, 2562, 2870, 3477, 3895, 3990, 4270, 4305, 4674, 5002, 5453, 5795, 6405, 6954, 7503, 7790, 8113, 8610, 10906, 11590, 11685, 12505, 12810, 15006, 16226, 16359, 17385, 17507, 23370, 24339, 25010, 27265, 32718, 34770, 35014, 37515, 40565, 47519, 48678, 52521, 54530, 75030, 81130, 81795, 87535, 95038, 105042, 121695, 142557, 163590, 175070, 237595, 243390, 262605, 285114, 332633, 475190, 525210, 665266, 712785, 997899, 1425570, 1663165, 1995798, 3326330, 4989495, 9978990]

約数ペア:

[(1, 9978990), (2, 4989495), (3, 3326330), (5, 1995798), (6, 1663165), (7, 1425570), (10, 997899), (14, 712785), (15, 665266), (19, 525210), (21, 475190), (30, 332633), (35, 285114), (38, 262605), (41, 243390), (42, 237595), (57, 175070), (61, 163590), (70, 142557), (82, 121695), (95, 105042), (105, 95038), (114, 87535), (122, 81795), (123, 81130), (133, 75030), (183, 54530), (190, 52521), (205, 48678), (210, 47519), (246, 40565), (266, 37515), (285, 35014), (287, 34770), (305, 32718), (366, 27265), (399, 25010), (410, 24339), (427, 23370), (570, 17507), (574, 17385), (610, 16359), (615, 16226), (665, 15006), (779, 12810), (798, 12505), (854, 11685), (861, 11590), (915, 10906), (1159, 8610), (1230, 8113), (1281, 7790), (1330, 7503), (1435, 6954), (1558, 6405), (1722, 5795), (1830, 5453), (1995, 5002), (2135, 4674), (2318, 4305), (2337, 4270), (2501, 3990), (2562, 3895), (2870, 3477)]