51839440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20903}}^1$

素因数の和:20947

約数の個数: 40

約数和(自身を含む): 124420608

約数和(自身を除く): 72581168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 20903, 41806, 83612, 104515, 167224, 209030, 334448, 418060, 647993, 836120, 1295986, 1672240, 2591972, 3239965, 5183944, 6479930, 10367888, 12959860, 25919720, 51839440]

約数ペア:

[(1, 51839440), (2, 25919720), (4, 12959860), (5, 10367888), (8, 6479930), (10, 5183944), (16, 3239965), (20, 2591972), (31, 1672240), (40, 1295986), (62, 836120), (80, 647993), (124, 418060), (155, 334448), (248, 209030), (310, 167224), (496, 104515), (620, 83612), (1240, 41806), (2480, 20903)]