19415920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7829}}^1$

素因数の和:7873

約数の個数: 40

約数和(自身を含む): 46604160

約数和(自身を除く): 27188240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7829, 15658, 31316, 39145, 62632, 78290, 125264, 156580, 242699, 313160, 485398, 626320, 970796, 1213495, 1941592, 2426990, 3883184, 4853980, 9707960, 19415920]

約数ペア:

[(1, 19415920), (2, 9707960), (4, 4853980), (5, 3883184), (8, 2426990), (10, 1941592), (16, 1213495), (20, 970796), (31, 626320), (40, 485398), (62, 313160), (80, 242699), (124, 156580), (155, 125264), (248, 78290), (310, 62632), (496, 39145), (620, 31316), (1240, 15658), (2480, 7829)]