81065000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{523}}^1$

素因数の和:580

約数の個数: 80

約数和(自身を含む): 196437120

約数和(自身を除く): 115372120

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 523, 620, 625, 775, 1000, 1046, 1240, 1250, 1550, 2092, 2500, 2615, 3100, 3875, 4184, 5000, 5230, 6200, 7750, 10460, 13075, 15500, 16213, 19375, 20920, 26150, 31000, 32426, 38750, 52300, 64852, 65375, 77500, 81065, 104600, 129704, 130750, 155000, 162130, 261500, 324260, 326875, 405325, 523000, 648520, 653750, 810650, 1307500, 1621300, 2026625, 2615000, 3242600, 4053250, 8106500, 10133125, 16213000, 20266250, 40532500, 81065000]

約数ペア:

[(1, 81065000), (2, 40532500), (4, 20266250), (5, 16213000), (8, 10133125), (10, 8106500), (20, 4053250), (25, 3242600), (31, 2615000), (40, 2026625), (50, 1621300), (62, 1307500), (100, 810650), (124, 653750), (125, 648520), (155, 523000), (200, 405325), (248, 326875), (250, 324260), (310, 261500), (500, 162130), (523, 155000), (620, 130750), (625, 129704), (775, 104600), (1000, 81065), (1046, 77500), (1240, 65375), (1250, 64852), (1550, 52300), (2092, 38750), (2500, 32426), (2615, 31000), (3100, 26150), (3875, 20920), (4184, 19375), (5000, 16213), (5230, 15500), (6200, 13075), (7750, 10460)]