20870148

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:325

約数の個数: 72

約数和(自身を含む): 54232416

約数和(自身を除く): 33362268

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 41, 52, 78, 82, 123, 156, 164, 169, 246, 251, 338, 492, 502, 507, 533, 676, 753, 1004, 1014, 1066, 1506, 1599, 2028, 2132, 3012, 3198, 3263, 6396, 6526, 6929, 9789, 10291, 13052, 13858, 19578, 20582, 20787, 27716, 30873, 39156, 41164, 41574, 42419, 61746, 83148, 84838, 123492, 127257, 133783, 169676, 254514, 267566, 401349, 509028, 535132, 802698, 1605396, 1739179, 3478358, 5217537, 6956716, 10435074, 20870148]

約数ペア:

[(1, 20870148), (2, 10435074), (3, 6956716), (4, 5217537), (6, 3478358), (12, 1739179), (13, 1605396), (26, 802698), (39, 535132), (41, 509028), (52, 401349), (78, 267566), (82, 254514), (123, 169676), (156, 133783), (164, 127257), (169, 123492), (246, 84838), (251, 83148), (338, 61746), (492, 42419), (502, 41574), (507, 41164), (533, 39156), (676, 30873), (753, 27716), (1004, 20787), (1014, 20582), (1066, 19578), (1506, 13858), (1599, 13052), (2028, 10291), (2132, 9789), (3012, 6929), (3198, 6526), (3263, 6396)]