20019160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:161

約数の個数: 128

約数和(自身を含む): 55987200

約数和(自身を除く): 35968040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 53, 56, 70, 71, 76, 95, 106, 133, 140, 142, 152, 190, 212, 265, 266, 280, 284, 355, 371, 380, 424, 497, 530, 532, 568, 665, 710, 742, 760, 994, 1007, 1060, 1064, 1330, 1349, 1420, 1484, 1855, 1988, 2014, 2120, 2485, 2660, 2698, 2840, 2968, 3710, 3763, 3976, 4028, 4970, 5035, 5320, 5396, 6745, 7049, 7420, 7526, 8056, 9443, 9940, 10070, 10792, 13490, 14098, 14840, 15052, 18815, 18886, 19880, 20140, 26341, 26980, 28196, 30104, 35245, 37630, 37772, 40280, 47215, 52682, 53960, 56392, 70490, 71497, 75260, 75544, 94430, 105364, 131705, 140980, 142994, 150520, 188860, 210728, 263410, 281960, 285988, 357485, 377720, 500479, 526820, 571976, 714970, 1000958, 1053640, 1429940, 2001916, 2502395, 2859880, 4003832, 5004790, 10009580, 20019160]

約数ペア:

[(1, 20019160), (2, 10009580), (4, 5004790), (5, 4003832), (7, 2859880), (8, 2502395), (10, 2001916), (14, 1429940), (19, 1053640), (20, 1000958), (28, 714970), (35, 571976), (38, 526820), (40, 500479), (53, 377720), (56, 357485), (70, 285988), (71, 281960), (76, 263410), (95, 210728), (106, 188860), (133, 150520), (140, 142994), (142, 140980), (152, 131705), (190, 105364), (212, 94430), (265, 75544), (266, 75260), (280, 71497), (284, 70490), (355, 56392), (371, 53960), (380, 52682), (424, 47215), (497, 40280), (530, 37772), (532, 37630), (568, 35245), (665, 30104), (710, 28196), (742, 26980), (760, 26341), (994, 20140), (1007, 19880), (1060, 18886), (1064, 18815), (1330, 15052), (1349, 14840), (1420, 14098), (1484, 13490), (1855, 10792), (1988, 10070), (2014, 9940), (2120, 9443), (2485, 8056), (2660, 7526), (2698, 7420), (2840, 7049), (2968, 6745), (3710, 5396), (3763, 5320), (3976, 5035), (4028, 4970)]