18921840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1609}}^1$

素因数の和:1639

約数の個数: 120

約数和(自身を含む): 68276880

約数和(自身を除く): 49355040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1609, 1680, 1960, 2352, 2940, 3218, 3920, 4827, 5880, 6436, 8045, 9654, 11263, 11760, 12872, 16090, 19308, 22526, 24135, 25744, 32180, 33789, 38616, 45052, 48270, 56315, 64360, 67578, 77232, 78841, 90104, 96540, 112630, 128720, 135156, 157682, 168945, 180208, 193080, 225260, 236523, 270312, 315364, 337890, 386160, 394205, 450520, 473046, 540624, 630728, 675780, 788410, 901040, 946092, 1182615, 1261456, 1351560, 1576820, 1892184, 2365230, 2703120, 3153640, 3784368, 4730460, 6307280, 9460920, 18921840]

約数ペア:

[(1, 18921840), (2, 9460920), (3, 6307280), (4, 4730460), (5, 3784368), (6, 3153640), (7, 2703120), (8, 2365230), (10, 1892184), (12, 1576820), (14, 1351560), (15, 1261456), (16, 1182615), (20, 946092), (21, 901040), (24, 788410), (28, 675780), (30, 630728), (35, 540624), (40, 473046), (42, 450520), (48, 394205), (49, 386160), (56, 337890), (60, 315364), (70, 270312), (80, 236523), (84, 225260), (98, 193080), (105, 180208), (112, 168945), (120, 157682), (140, 135156), (147, 128720), (168, 112630), (196, 96540), (210, 90104), (240, 78841), (245, 77232), (280, 67578), (294, 64360), (336, 56315), (392, 48270), (420, 45052), (490, 38616), (560, 33789), (588, 32180), (735, 25744), (784, 24135), (840, 22526), (980, 19308), (1176, 16090), (1470, 12872), (1609, 11760), (1680, 11263), (1960, 9654), (2352, 8045), (2940, 6436), (3218, 5880), (3920, 4827)]