20038642988

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{47581}}^1$

素因数の和:47707

約数の個数: 72

約数和(自身を含む): 43885830240

約数和(自身を除く): 23847187252

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 89, 91, 169, 178, 182, 338, 356, 364, 623, 676, 1157, 1183, 1246, 2314, 2366, 2492, 4628, 4732, 8099, 15041, 16198, 30082, 32396, 47581, 60164, 95162, 105287, 190324, 210574, 333067, 421148, 618553, 666134, 1237106, 1332268, 2474212, 4234709, 4329871, 8041189, 8469418, 8659742, 16082378, 16938836, 17319484, 29642963, 32164756, 55051217, 56288323, 59285926, 110102434, 112576646, 118571852, 220204868, 225153292, 385358519, 715665821, 770717038, 1431331642, 1541434076, 2862663284, 5009660747, 10019321494, 20038642988]

約数ペア:

[(1, 20038642988), (2, 10019321494), (4, 5009660747), (7, 2862663284), (13, 1541434076), (14, 1431331642), (26, 770717038), (28, 715665821), (52, 385358519), (89, 225153292), (91, 220204868), (169, 118571852), (178, 112576646), (182, 110102434), (338, 59285926), (356, 56288323), (364, 55051217), (623, 32164756), (676, 29642963), (1157, 17319484), (1183, 16938836), (1246, 16082378), (2314, 8659742), (2366, 8469418), (2492, 8041189), (4628, 4329871), (4732, 4234709), (8099, 2474212), (15041, 1332268), (16198, 1237106), (30082, 666134), (32396, 618553), (47581, 421148), (60164, 333067), (95162, 210574), (105287, 190324)]