21357900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1249}}^1$

素因数の和:1288

約数の個数: 108

約数和(自身を含む): 70525000

約数和(自身を除く): 49167100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 25, 30, 36, 38, 45, 50, 57, 60, 75, 76, 90, 95, 100, 114, 150, 171, 180, 190, 225, 228, 285, 300, 342, 380, 450, 475, 570, 684, 855, 900, 950, 1140, 1249, 1425, 1710, 1900, 2498, 2850, 3420, 3747, 4275, 4996, 5700, 6245, 7494, 8550, 11241, 12490, 14988, 17100, 18735, 22482, 23731, 24980, 31225, 37470, 44964, 47462, 56205, 62450, 71193, 74940, 93675, 94924, 112410, 118655, 124900, 142386, 187350, 213579, 224820, 237310, 281025, 284772, 355965, 374700, 427158, 474620, 562050, 593275, 711930, 854316, 1067895, 1124100, 1186550, 1423860, 1779825, 2135790, 2373100, 3559650, 4271580, 5339475, 7119300, 10678950, 21357900]

約数ペア:

[(1, 21357900), (2, 10678950), (3, 7119300), (4, 5339475), (5, 4271580), (6, 3559650), (9, 2373100), (10, 2135790), (12, 1779825), (15, 1423860), (18, 1186550), (19, 1124100), (20, 1067895), (25, 854316), (30, 711930), (36, 593275), (38, 562050), (45, 474620), (50, 427158), (57, 374700), (60, 355965), (75, 284772), (76, 281025), (90, 237310), (95, 224820), (100, 213579), (114, 187350), (150, 142386), (171, 124900), (180, 118655), (190, 112410), (225, 94924), (228, 93675), (285, 74940), (300, 71193), (342, 62450), (380, 56205), (450, 47462), (475, 44964), (570, 37470), (684, 31225), (855, 24980), (900, 23731), (950, 22482), (1140, 18735), (1249, 17100), (1425, 14988), (1710, 12490), (1900, 11241), (2498, 8550), (2850, 7494), (3420, 6245), (3747, 5700), (4275, 4996)]