20100800

素因数分解:

$2^6\times 5^2\times {\mathrm{17}}^1\times {\mathrm{739}}^1$

素因数の和:778

約数の個数: 84

約数和(自身を含む): 52440840

約数和(自身を除く): 32340040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 80, 85, 100, 136, 160, 170, 200, 272, 320, 340, 400, 425, 544, 680, 739, 800, 850, 1088, 1360, 1478, 1600, 1700, 2720, 2956, 3400, 3695, 5440, 5912, 6800, 7390, 11824, 12563, 13600, 14780, 18475, 23648, 25126, 27200, 29560, 36950, 47296, 50252, 59120, 62815, 73900, 100504, 118240, 125630, 147800, 201008, 236480, 251260, 295600, 314075, 402016, 502520, 591200, 628150, 804032, 1005040, 1182400, 1256300, 2010080, 2512600, 4020160, 5025200, 10050400, 20100800]

約数ペア:

[(1, 20100800), (2, 10050400), (4, 5025200), (5, 4020160), (8, 2512600), (10, 2010080), (16, 1256300), (17, 1182400), (20, 1005040), (25, 804032), (32, 628150), (34, 591200), (40, 502520), (50, 402016), (64, 314075), (68, 295600), (80, 251260), (85, 236480), (100, 201008), (136, 147800), (160, 125630), (170, 118240), (200, 100504), (272, 73900), (320, 62815), (340, 59120), (400, 50252), (425, 47296), (544, 36950), (680, 29560), (739, 27200), (800, 25126), (850, 23648), (1088, 18475), (1360, 14780), (1478, 13600), (1600, 12563), (1700, 11824), (2720, 7390), (2956, 6800), (3400, 5912), (3695, 5440)]