81958940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{3929}}^1$

素因数の和:4094

約数の個数: 48

約数和(自身を含む): 198072000

約数和(自身を除く): 116113060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 2086, 2980, 3929, 4172, 5215, 7858, 10430, 15716, 19645, 20860, 27503, 39290, 55006, 78580, 110012, 137515, 275030, 550060, 585421, 1170842, 2341684, 2927105, 4097947, 5854210, 8195894, 11708420, 16391788, 20489735, 40979470, 81958940]

約数ペア:

[(1, 81958940), (2, 40979470), (4, 20489735), (5, 16391788), (7, 11708420), (10, 8195894), (14, 5854210), (20, 4097947), (28, 2927105), (35, 2341684), (70, 1170842), (140, 585421), (149, 550060), (298, 275030), (596, 137515), (745, 110012), (1043, 78580), (1490, 55006), (2086, 39290), (2980, 27503), (3929, 20860), (4172, 19645), (5215, 15716), (7858, 10430)]