851816240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{22511}}^1$

素因数の和:22578

約数の個数: 80

約数和(自身を含む): 2210858496

約数和(自身を除く): 1359042256

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 688, 860, 880, 946, 1720, 1892, 2365, 3440, 3784, 4730, 7568, 9460, 18920, 22511, 37840, 45022, 90044, 112555, 180088, 225110, 247621, 360176, 450220, 495242, 900440, 967973, 990484, 1238105, 1800880, 1935946, 1980968, 2476210, 3871892, 3961936, 4839865, 4952420, 7743784, 9679730, 9904840, 10647703, 15487568, 19359460, 19809680, 21295406, 38718920, 42590812, 53238515, 77437840, 85181624, 106477030, 170363248, 212954060, 425908120, 851816240]

約数ペア:

[(1, 851816240), (2, 425908120), (4, 212954060), (5, 170363248), (8, 106477030), (10, 85181624), (11, 77437840), (16, 53238515), (20, 42590812), (22, 38718920), (40, 21295406), (43, 19809680), (44, 19359460), (55, 15487568), (80, 10647703), (86, 9904840), (88, 9679730), (110, 7743784), (172, 4952420), (176, 4839865), (215, 3961936), (220, 3871892), (344, 2476210), (430, 1980968), (440, 1935946), (473, 1800880), (688, 1238105), (860, 990484), (880, 967973), (946, 900440), (1720, 495242), (1892, 450220), (2365, 360176), (3440, 247621), (3784, 225110), (4730, 180088), (7568, 112555), (9460, 90044), (18920, 45022), (22511, 37840)]