20781921030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{683}}^1\times {\mathrm{1279}}^1$

素因数の和:2046

約数の個数: 128

約数和(自身を含む): 54716497920

約数和(自身を除く): 33934576890

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 61, 65, 78, 122, 130, 183, 195, 305, 366, 390, 610, 683, 793, 915, 1279, 1366, 1586, 1830, 2049, 2379, 2558, 3415, 3837, 3965, 4098, 4758, 6395, 6830, 7674, 7930, 8879, 10245, 11895, 12790, 16627, 17758, 19185, 20490, 23790, 26637, 33254, 38370, 41663, 44395, 49881, 53274, 78019, 83135, 83326, 88790, 99762, 124989, 133185, 156038, 166270, 208315, 234057, 249405, 249978, 266370, 390095, 416630, 468114, 498810, 541619, 624945, 780190, 873557, 1014247, 1083238, 1170285, 1249890, 1624857, 1747114, 2028494, 2340570, 2620671, 2708095, 3042741, 3249714, 4367785, 5071235, 5241342, 5416190, 6085482, 8124285, 8735570, 10142470, 11356241, 13103355, 15213705, 16248570, 22712482, 26206710, 30427410, 34068723, 53286977, 56781205, 68137446, 106573954, 113562410, 159860931, 170343615, 266434885, 319721862, 340687230, 532869770, 692730701, 799304655, 1385461402, 1598609310, 2078192103, 3463653505, 4156384206, 6927307010, 10390960515, 20781921030]

約数ペア:

[(1, 20781921030), (2, 10390960515), (3, 6927307010), (5, 4156384206), (6, 3463653505), (10, 2078192103), (13, 1598609310), (15, 1385461402), (26, 799304655), (30, 692730701), (39, 532869770), (61, 340687230), (65, 319721862), (78, 266434885), (122, 170343615), (130, 159860931), (183, 113562410), (195, 106573954), (305, 68137446), (366, 56781205), (390, 53286977), (610, 34068723), (683, 30427410), (793, 26206710), (915, 22712482), (1279, 16248570), (1366, 15213705), (1586, 13103355), (1830, 11356241), (2049, 10142470), (2379, 8735570), (2558, 8124285), (3415, 6085482), (3837, 5416190), (3965, 5241342), (4098, 5071235), (4758, 4367785), (6395, 3249714), (6830, 3042741), (7674, 2708095), (7930, 2620671), (8879, 2340570), (10245, 2028494), (11895, 1747114), (12790, 1624857), (16627, 1249890), (17758, 1170285), (19185, 1083238), (20490, 1014247), (23790, 873557), (26637, 780190), (33254, 624945), (38370, 541619), (41663, 498810), (44395, 468114), (49881, 416630), (53274, 390095), (78019, 266370), (83135, 249978), (83326, 249405), (88790, 234057), (99762, 208315), (124989, 166270), (133185, 156038)]