389548640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9857}}^1$

素因数の和:9904

約数の個数: 96

約数和(自身を含む): 1043370720

約数和(自身を除く): 653822080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 494, 520, 608, 760, 988, 1040, 1235, 1520, 1976, 2080, 2470, 3040, 3952, 4940, 7904, 9857, 9880, 19714, 19760, 39428, 39520, 49285, 78856, 98570, 128141, 157712, 187283, 197140, 256282, 315424, 374566, 394280, 512564, 640705, 749132, 788560, 936415, 1025128, 1281410, 1498264, 1577120, 1872830, 2050256, 2434679, 2562820, 2996528, 3745660, 4100512, 4869358, 5125640, 5993056, 7491320, 9738716, 10251280, 12173395, 14982640, 19477432, 20502560, 24346790, 29965280, 38954864, 48693580, 77909728, 97387160, 194774320, 389548640]

約数ペア:

[(1, 389548640), (2, 194774320), (4, 97387160), (5, 77909728), (8, 48693580), (10, 38954864), (13, 29965280), (16, 24346790), (19, 20502560), (20, 19477432), (26, 14982640), (32, 12173395), (38, 10251280), (40, 9738716), (52, 7491320), (65, 5993056), (76, 5125640), (80, 4869358), (95, 4100512), (104, 3745660), (130, 2996528), (152, 2562820), (160, 2434679), (190, 2050256), (208, 1872830), (247, 1577120), (260, 1498264), (304, 1281410), (380, 1025128), (416, 936415), (494, 788560), (520, 749132), (608, 640705), (760, 512564), (988, 394280), (1040, 374566), (1235, 315424), (1520, 256282), (1976, 197140), (2080, 187283), (2470, 157712), (3040, 128141), (3952, 98570), (4940, 78856), (7904, 49285), (9857, 39520), (9880, 39428), (19714, 19760)]