19878885

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 39029760

約数和(自身を除く): 19150875

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 47, 65, 117, 135, 141, 195, 235, 241, 351, 423, 585, 611, 705, 723, 1205, 1269, 1755, 1833, 2115, 2169, 3055, 3133, 3615, 5499, 6345, 6507, 9165, 9399, 10845, 11327, 15665, 16497, 27495, 28197, 32535, 33981, 46995, 56635, 82485, 84591, 101943, 140985, 147251, 169905, 305829, 422955, 441753, 509715, 736255, 1325259, 1529145, 2208765, 3975777, 6626295, 19878885]

約数ペア:

[(1, 19878885), (3, 6626295), (5, 3975777), (9, 2208765), (13, 1529145), (15, 1325259), (27, 736255), (39, 509715), (45, 441753), (47, 422955), (65, 305829), (117, 169905), (135, 147251), (141, 140985), (195, 101943), (235, 84591), (241, 82485), (351, 56635), (423, 46995), (585, 33981), (611, 32535), (705, 28197), (723, 27495), (1205, 16497), (1269, 15665), (1755, 11327), (1833, 10845), (2115, 9399), (2169, 9165), (3055, 6507), (3133, 6345), (3615, 5499)]