19974580

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{251}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 24224204

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 173, 230, 251, 346, 460, 502, 692, 865, 1004, 1255, 1730, 2510, 3460, 3979, 5020, 5773, 7958, 11546, 15916, 19895, 23092, 28865, 39790, 43423, 57730, 79580, 86846, 115460, 173692, 217115, 434230, 868460, 998729, 1997458, 3994916, 4993645, 9987290, 19974580]

約数ペア:

[(1, 19974580), (2, 9987290), (4, 4993645), (5, 3994916), (10, 1997458), (20, 998729), (23, 868460), (46, 434230), (92, 217115), (115, 173692), (173, 115460), (230, 86846), (251, 79580), (346, 57730), (460, 43423), (502, 39790), (692, 28865), (865, 23092), (1004, 19895), (1255, 15916), (1730, 11546), (2510, 7958), (3460, 5773), (3979, 5020)]