20917860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:401

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 41981340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 59, 60, 76, 95, 114, 118, 177, 190, 228, 236, 285, 295, 311, 354, 380, 570, 590, 622, 708, 885, 933, 1121, 1140, 1180, 1244, 1555, 1770, 1866, 2242, 3110, 3363, 3540, 3732, 4484, 4665, 5605, 5909, 6220, 6726, 9330, 11210, 11818, 13452, 16815, 17727, 18349, 18660, 22420, 23636, 29545, 33630, 35454, 36698, 55047, 59090, 67260, 70908, 73396, 88635, 91745, 110094, 118180, 177270, 183490, 220188, 275235, 348631, 354540, 366980, 550470, 697262, 1045893, 1100940, 1394524, 1743155, 2091786, 3486310, 4183572, 5229465, 6972620, 10458930, 20917860]

約数ペア:

[(1, 20917860), (2, 10458930), (3, 6972620), (4, 5229465), (5, 4183572), (6, 3486310), (10, 2091786), (12, 1743155), (15, 1394524), (19, 1100940), (20, 1045893), (30, 697262), (38, 550470), (57, 366980), (59, 354540), (60, 348631), (76, 275235), (95, 220188), (114, 183490), (118, 177270), (177, 118180), (190, 110094), (228, 91745), (236, 88635), (285, 73396), (295, 70908), (311, 67260), (354, 59090), (380, 55047), (570, 36698), (590, 35454), (622, 33630), (708, 29545), (885, 23636), (933, 22420), (1121, 18660), (1140, 18349), (1180, 17727), (1244, 16815), (1555, 13452), (1770, 11818), (1866, 11210), (2242, 9330), (3110, 6726), (3363, 6220), (3540, 5909), (3732, 5605), (4484, 4665)]