20559140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 53222400

約数和(自身を除く): 32663260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 59, 70, 76, 95, 118, 131, 133, 140, 190, 236, 262, 266, 295, 380, 413, 524, 532, 590, 655, 665, 826, 917, 1121, 1180, 1310, 1330, 1652, 1834, 2065, 2242, 2489, 2620, 2660, 3668, 4130, 4484, 4585, 4978, 5605, 7729, 7847, 8260, 9170, 9956, 11210, 12445, 15458, 15694, 17423, 18340, 22420, 24890, 30916, 31388, 34846, 38645, 39235, 49780, 54103, 69692, 77290, 78470, 87115, 108206, 146851, 154580, 156940, 174230, 216412, 270515, 293702, 348460, 541030, 587404, 734255, 1027957, 1082060, 1468510, 2055914, 2937020, 4111828, 5139785, 10279570, 20559140]

約数ペア:

[(1, 20559140), (2, 10279570), (4, 5139785), (5, 4111828), (7, 2937020), (10, 2055914), (14, 1468510), (19, 1082060), (20, 1027957), (28, 734255), (35, 587404), (38, 541030), (59, 348460), (70, 293702), (76, 270515), (95, 216412), (118, 174230), (131, 156940), (133, 154580), (140, 146851), (190, 108206), (236, 87115), (262, 78470), (266, 77290), (295, 69692), (380, 54103), (413, 49780), (524, 39235), (532, 38645), (590, 34846), (655, 31388), (665, 30916), (826, 24890), (917, 22420), (1121, 18340), (1180, 17423), (1310, 15694), (1330, 15458), (1652, 12445), (1834, 11210), (2065, 9956), (2242, 9170), (2489, 8260), (2620, 7847), (2660, 7729), (3668, 5605), (4130, 4978), (4484, 4585)]