20401020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 46822500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 59, 60, 68, 85, 90, 102, 113, 118, 153, 170, 177, 180, 204, 226, 236, 255, 295, 306, 339, 340, 354, 452, 510, 531, 565, 590, 612, 678, 708, 765, 885, 1003, 1017, 1020, 1062, 1130, 1180, 1356, 1530, 1695, 1770, 1921, 2006, 2034, 2124, 2260, 2655, 3009, 3060, 3390, 3540, 3842, 4012, 4068, 5015, 5085, 5310, 5763, 6018, 6667, 6780, 7684, 9027, 9605, 10030, 10170, 10620, 11526, 12036, 13334, 15045, 17289, 18054, 19210, 20001, 20060, 20340, 23052, 26668, 28815, 30090, 33335, 34578, 36108, 38420, 40002, 45135, 57630, 60003, 60180, 66670, 69156, 80004, 86445, 90270, 100005, 113339, 115260, 120006, 133340, 172890, 180540, 200010, 226678, 240012, 300015, 340017, 345780, 400020, 453356, 566695, 600030, 680034, 1020051, 1133390, 1200060, 1360068, 1700085, 2040102, 2266780, 3400170, 4080204, 5100255, 6800340, 10200510, 20401020]

約数ペア:

[(1, 20401020), (2, 10200510), (3, 6800340), (4, 5100255), (5, 4080204), (6, 3400170), (9, 2266780), (10, 2040102), (12, 1700085), (15, 1360068), (17, 1200060), (18, 1133390), (20, 1020051), (30, 680034), (34, 600030), (36, 566695), (45, 453356), (51, 400020), (59, 345780), (60, 340017), (68, 300015), (85, 240012), (90, 226678), (102, 200010), (113, 180540), (118, 172890), (153, 133340), (170, 120006), (177, 115260), (180, 113339), (204, 100005), (226, 90270), (236, 86445), (255, 80004), (295, 69156), (306, 66670), (339, 60180), (340, 60003), (354, 57630), (452, 45135), (510, 40002), (531, 38420), (565, 36108), (590, 34578), (612, 33335), (678, 30090), (708, 28815), (765, 26668), (885, 23052), (1003, 20340), (1017, 20060), (1020, 20001), (1062, 19210), (1130, 18054), (1180, 17289), (1356, 15045), (1530, 13334), (1695, 12036), (1770, 11526), (1921, 10620), (2006, 10170), (2034, 10030), (2124, 9605), (2260, 9027), (2655, 7684), (3009, 6780), (3060, 6667), (3390, 6018), (3540, 5763), (3842, 5310), (4012, 5085), (4068, 5015)]