181878320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{977}}^1$

素因数の和:1182

約数の個数: 80

約数和(自身を含む): 458408160

約数和(自身を除く): 276529840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 179, 208, 260, 358, 520, 716, 895, 977, 1040, 1432, 1790, 1954, 2327, 2864, 3580, 3908, 4654, 4885, 7160, 7816, 9308, 9770, 11635, 12701, 14320, 15632, 18616, 19540, 23270, 25402, 37232, 39080, 46540, 50804, 63505, 78160, 93080, 101608, 127010, 174883, 186160, 203216, 254020, 349766, 508040, 699532, 874415, 1016080, 1399064, 1748830, 2273479, 2798128, 3497660, 4546958, 6995320, 9093916, 11367395, 13990640, 18187832, 22734790, 36375664, 45469580, 90939160, 181878320]

約数ペア:

[(1, 181878320), (2, 90939160), (4, 45469580), (5, 36375664), (8, 22734790), (10, 18187832), (13, 13990640), (16, 11367395), (20, 9093916), (26, 6995320), (40, 4546958), (52, 3497660), (65, 2798128), (80, 2273479), (104, 1748830), (130, 1399064), (179, 1016080), (208, 874415), (260, 699532), (358, 508040), (520, 349766), (716, 254020), (895, 203216), (977, 186160), (1040, 174883), (1432, 127010), (1790, 101608), (1954, 93080), (2327, 78160), (2864, 63505), (3580, 50804), (3908, 46540), (4654, 39080), (4885, 37232), (7160, 25402), (7816, 23270), (9308, 19540), (9770, 18616), (11635, 15632), (12701, 14320)]