21497580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9187}}^1$

素因数の和:9215

約数の個数: 72

約数和(自身を含む): 70233072

約数和(自身を除く): 48735492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9187, 18374, 27561, 36748, 45935, 55122, 82683, 91870, 110244, 119431, 137805, 165366, 183740, 238862, 275610, 330732, 358293, 413415, 477724, 551220, 597155, 716586, 826830, 1074879, 1194310, 1433172, 1653660, 1791465, 2149758, 2388620, 3582930, 4299516, 5374395, 7165860, 10748790, 21497580]

約数ペア:

[(1, 21497580), (2, 10748790), (3, 7165860), (4, 5374395), (5, 4299516), (6, 3582930), (9, 2388620), (10, 2149758), (12, 1791465), (13, 1653660), (15, 1433172), (18, 1194310), (20, 1074879), (26, 826830), (30, 716586), (36, 597155), (39, 551220), (45, 477724), (52, 413415), (60, 358293), (65, 330732), (78, 275610), (90, 238862), (117, 183740), (130, 165366), (156, 137805), (180, 119431), (195, 110244), (234, 91870), (260, 82683), (390, 55122), (468, 45935), (585, 36748), (780, 27561), (1170, 18374), (2340, 9187)]