71344180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 153090000

約数和(自身を除く): 81745820

約数列:

[1, 2, 4, 5, 10, 20, 89, 149, 178, 269, 298, 356, 445, 538, 596, 745, 890, 1076, 1345, 1490, 1780, 2690, 2980, 5380, 13261, 23941, 26522, 40081, 47882, 53044, 66305, 80162, 95764, 119705, 132610, 160324, 200405, 239410, 265220, 400810, 478820, 801620, 3567209, 7134418, 14268836, 17836045, 35672090, 71344180]

約数ペア:

[(1, 71344180), (2, 35672090), (4, 17836045), (5, 14268836), (10, 7134418), (20, 3567209), (89, 801620), (149, 478820), (178, 400810), (269, 265220), (298, 239410), (356, 200405), (445, 160324), (538, 132610), (596, 119705), (745, 95764), (890, 80162), (1076, 66305), (1345, 53044), (1490, 47882), (1780, 40081), (2690, 26522), (2980, 23941), (5380, 13261)]