21999460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 56383488

約数和(自身を除く): 34384028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 37, 62, 70, 74, 124, 137, 140, 148, 155, 185, 217, 259, 274, 310, 370, 434, 518, 548, 620, 685, 740, 868, 959, 1036, 1085, 1147, 1295, 1370, 1918, 2170, 2294, 2590, 2740, 3836, 4247, 4340, 4588, 4795, 5069, 5180, 5735, 8029, 8494, 9590, 10138, 11470, 16058, 16988, 19180, 20276, 21235, 22940, 25345, 29729, 32116, 35483, 40145, 42470, 50690, 59458, 70966, 80290, 84940, 101380, 118916, 141932, 148645, 157139, 160580, 177415, 297290, 314278, 354830, 594580, 628556, 709660, 785695, 1099973, 1571390, 2199946, 3142780, 4399892, 5499865, 10999730, 21999460]

約数ペア:

[(1, 21999460), (2, 10999730), (4, 5499865), (5, 4399892), (7, 3142780), (10, 2199946), (14, 1571390), (20, 1099973), (28, 785695), (31, 709660), (35, 628556), (37, 594580), (62, 354830), (70, 314278), (74, 297290), (124, 177415), (137, 160580), (140, 157139), (148, 148645), (155, 141932), (185, 118916), (217, 101380), (259, 84940), (274, 80290), (310, 70966), (370, 59458), (434, 50690), (518, 42470), (548, 40145), (620, 35483), (685, 32116), (740, 29729), (868, 25345), (959, 22940), (1036, 21235), (1085, 20276), (1147, 19180), (1295, 16988), (1370, 16058), (1918, 11470), (2170, 10138), (2294, 9590), (2590, 8494), (2740, 8029), (3836, 5735), (4247, 5180), (4340, 5069), (4588, 4795)]