19871475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 35935200

約数和(自身を除く): 16063725

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 89, 195, 229, 267, 325, 445, 687, 975, 1145, 1157, 1335, 2225, 2977, 3435, 3471, 5725, 5785, 6675, 8931, 14885, 17175, 17355, 20381, 28925, 44655, 61143, 74425, 86775, 101905, 223275, 264953, 305715, 509525, 794859, 1324765, 1528575, 3974295, 6623825, 19871475]

約数ペア:

[(1, 19871475), (3, 6623825), (5, 3974295), (13, 1528575), (15, 1324765), (25, 794859), (39, 509525), (65, 305715), (75, 264953), (89, 223275), (195, 101905), (229, 86775), (267, 74425), (325, 61143), (445, 44655), (687, 28925), (975, 20381), (1145, 17355), (1157, 17175), (1335, 14885), (2225, 8931), (2977, 6675), (3435, 5785), (3471, 5725)]