20165728240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{78797}}^1$

素因数の和:79274

約数の個数: 80

約数和(自身を含む): 53701152192

約数和(自身を除く): 33535423952

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 457, 560, 914, 1828, 2285, 3199, 3656, 4570, 6398, 7312, 9140, 12796, 15995, 18280, 25592, 31990, 36560, 51184, 63980, 78797, 127960, 157594, 255920, 315188, 393985, 551579, 630376, 787970, 1103158, 1260752, 1575940, 2206316, 2757895, 3151880, 4412632, 5515790, 6303760, 8825264, 11031580, 22063160, 36010229, 44126320, 72020458, 144040916, 180051145, 252071603, 288081832, 360102290, 504143206, 576163664, 720204580, 1008286412, 1260358015, 1440409160, 2016572824, 2520716030, 2880818320, 4033145648, 5041432060, 10082864120, 20165728240]

約数ペア:

[(1, 20165728240), (2, 10082864120), (4, 5041432060), (5, 4033145648), (7, 2880818320), (8, 2520716030), (10, 2016572824), (14, 1440409160), (16, 1260358015), (20, 1008286412), (28, 720204580), (35, 576163664), (40, 504143206), (56, 360102290), (70, 288081832), (80, 252071603), (112, 180051145), (140, 144040916), (280, 72020458), (457, 44126320), (560, 36010229), (914, 22063160), (1828, 11031580), (2285, 8825264), (3199, 6303760), (3656, 5515790), (4570, 4412632), (6398, 3151880), (7312, 2757895), (9140, 2206316), (12796, 1575940), (15995, 1260752), (18280, 1103158), (25592, 787970), (31990, 630376), (36560, 551579), (51184, 393985), (63980, 315188), (78797, 255920), (127960, 157594)]