25539440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:330

約数の個数: 80

約数和(自身を含む): 63879840

約数和(自身を除く): 38340400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 89, 136, 170, 178, 211, 272, 340, 356, 422, 445, 680, 712, 844, 890, 1055, 1360, 1424, 1513, 1688, 1780, 2110, 3026, 3376, 3560, 3587, 4220, 6052, 7120, 7174, 7565, 8440, 12104, 14348, 15130, 16880, 17935, 18779, 24208, 28696, 30260, 35870, 37558, 57392, 60520, 71740, 75116, 93895, 121040, 143480, 150232, 187790, 286960, 300464, 319243, 375580, 638486, 751160, 1276972, 1502320, 1596215, 2553944, 3192430, 5107888, 6384860, 12769720, 25539440]

約数ペア:

[(1, 25539440), (2, 12769720), (4, 6384860), (5, 5107888), (8, 3192430), (10, 2553944), (16, 1596215), (17, 1502320), (20, 1276972), (34, 751160), (40, 638486), (68, 375580), (80, 319243), (85, 300464), (89, 286960), (136, 187790), (170, 150232), (178, 143480), (211, 121040), (272, 93895), (340, 75116), (356, 71740), (422, 60520), (445, 57392), (680, 37558), (712, 35870), (844, 30260), (890, 28696), (1055, 24208), (1360, 18779), (1424, 17935), (1513, 16880), (1688, 15130), (1780, 14348), (2110, 12104), (3026, 8440), (3376, 7565), (3560, 7174), (3587, 7120), (4220, 6052)]