18840400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:141

約数の個数: 120

約数和(自身を含む): 49664480

約数和(自身を除く): 30824080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 37, 38, 40, 50, 67, 74, 76, 80, 95, 100, 134, 148, 152, 185, 190, 200, 268, 296, 304, 335, 370, 380, 400, 475, 536, 592, 670, 703, 740, 760, 925, 950, 1072, 1273, 1340, 1406, 1480, 1520, 1675, 1850, 1900, 2479, 2546, 2680, 2812, 2960, 3350, 3515, 3700, 3800, 4958, 5092, 5360, 5624, 6365, 6700, 7030, 7400, 7600, 9916, 10184, 11248, 12395, 12730, 13400, 14060, 14800, 17575, 19832, 20368, 24790, 25460, 26800, 28120, 31825, 35150, 39664, 47101, 49580, 50920, 56240, 61975, 63650, 70300, 94202, 99160, 101840, 123950, 127300, 140600, 188404, 198320, 235505, 247900, 254600, 281200, 376808, 471010, 495800, 509200, 753616, 942020, 991600, 1177525, 1884040, 2355050, 3768080, 4710100, 9420200, 18840400]

約数ペア:

[(1, 18840400), (2, 9420200), (4, 4710100), (5, 3768080), (8, 2355050), (10, 1884040), (16, 1177525), (19, 991600), (20, 942020), (25, 753616), (37, 509200), (38, 495800), (40, 471010), (50, 376808), (67, 281200), (74, 254600), (76, 247900), (80, 235505), (95, 198320), (100, 188404), (134, 140600), (148, 127300), (152, 123950), (185, 101840), (190, 99160), (200, 94202), (268, 70300), (296, 63650), (304, 61975), (335, 56240), (370, 50920), (380, 49580), (400, 47101), (475, 39664), (536, 35150), (592, 31825), (670, 28120), (703, 26800), (740, 25460), (760, 24790), (925, 20368), (950, 19832), (1072, 17575), (1273, 14800), (1340, 14060), (1406, 13400), (1480, 12730), (1520, 12395), (1675, 11248), (1850, 10184), (1900, 9916), (2479, 7600), (2546, 7400), (2680, 7030), (2812, 6700), (2960, 6365), (3350, 5624), (3515, 5360), (3700, 5092), (3800, 4958)]