164243980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{2753}}^1$

素因数の和:2938

約数の個数: 48

約数和(自身を含む): 365510880

約数和(自身を除く): 201266900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 157, 190, 314, 380, 628, 785, 1570, 2753, 2983, 3140, 5506, 5966, 11012, 11932, 13765, 14915, 27530, 29830, 52307, 55060, 59660, 104614, 209228, 261535, 432221, 523070, 864442, 1046140, 1728884, 2161105, 4322210, 8212199, 8644420, 16424398, 32848796, 41060995, 82121990, 164243980]

約数ペア:

[(1, 164243980), (2, 82121990), (4, 41060995), (5, 32848796), (10, 16424398), (19, 8644420), (20, 8212199), (38, 4322210), (76, 2161105), (95, 1728884), (157, 1046140), (190, 864442), (314, 523070), (380, 432221), (628, 261535), (785, 209228), (1570, 104614), (2753, 59660), (2983, 55060), (3140, 52307), (5506, 29830), (5966, 27530), (11012, 14915), (11932, 13765)]