20295328

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 22040672

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 62, 82, 124, 164, 248, 328, 496, 499, 656, 992, 998, 1271, 1312, 1996, 2542, 3992, 5084, 7984, 10168, 15469, 15968, 20336, 20459, 30938, 40672, 40918, 61876, 81836, 123752, 163672, 247504, 327344, 495008, 634229, 654688, 1268458, 2536916, 5073832, 10147664, 20295328]

約数ペア:

[(1, 20295328), (2, 10147664), (4, 5073832), (8, 2536916), (16, 1268458), (31, 654688), (32, 634229), (41, 495008), (62, 327344), (82, 247504), (124, 163672), (164, 123752), (248, 81836), (328, 61876), (496, 40918), (499, 40672), (656, 30938), (992, 20459), (998, 20336), (1271, 15968), (1312, 15469), (1996, 10168), (2542, 7984), (3992, 5084)]