21780660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:625

約数の個数: 96

約数和(自身を含む): 67745664

約数和(自身を除く): 45965004

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 61, 66, 110, 122, 132, 165, 183, 220, 244, 305, 330, 366, 541, 610, 660, 671, 732, 915, 1082, 1220, 1342, 1623, 1830, 2013, 2164, 2684, 2705, 3246, 3355, 3660, 4026, 5410, 5951, 6492, 6710, 8052, 8115, 10065, 10820, 11902, 13420, 16230, 17853, 20130, 23804, 29755, 32460, 33001, 35706, 40260, 59510, 66002, 71412, 89265, 99003, 119020, 132004, 165005, 178530, 198006, 330010, 357060, 363011, 396012, 495015, 660020, 726022, 990030, 1089033, 1452044, 1815055, 1980060, 2178066, 3630110, 4356132, 5445165, 7260220, 10890330, 21780660]

約数ペア:

[(1, 21780660), (2, 10890330), (3, 7260220), (4, 5445165), (5, 4356132), (6, 3630110), (10, 2178066), (11, 1980060), (12, 1815055), (15, 1452044), (20, 1089033), (22, 990030), (30, 726022), (33, 660020), (44, 495015), (55, 396012), (60, 363011), (61, 357060), (66, 330010), (110, 198006), (122, 178530), (132, 165005), (165, 132004), (183, 119020), (220, 99003), (244, 89265), (305, 71412), (330, 66002), (366, 59510), (541, 40260), (610, 35706), (660, 33001), (671, 32460), (732, 29755), (915, 23804), (1082, 20130), (1220, 17853), (1342, 16230), (1623, 13420), (1830, 11902), (2013, 10820), (2164, 10065), (2684, 8115), (2705, 8052), (3246, 6710), (3355, 6492), (3660, 5951), (4026, 5410)]