721395

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:92

約数の個数: 48

約数和(自身を含む): 1415232

約数和(自身を除く): 693837

約数列:

[1, 3, 5, 9, 15, 17, 23, 41, 45, 51, 69, 85, 115, 123, 153, 205, 207, 255, 345, 369, 391, 615, 697, 765, 943, 1035, 1173, 1845, 1955, 2091, 2829, 3485, 3519, 4715, 5865, 6273, 8487, 10455, 14145, 16031, 17595, 31365, 42435, 48093, 80155, 144279, 240465, 721395]

約数ペア:

[(1, 721395), (3, 240465), (5, 144279), (9, 80155), (15, 48093), (17, 42435), (23, 31365), (41, 17595), (45, 16031), (51, 14145), (69, 10455), (85, 8487), (115, 6273), (123, 5865), (153, 4715), (205, 3519), (207, 3485), (255, 2829), (345, 2091), (369, 1955), (391, 1845), (615, 1173), (697, 1035), (765, 943)]