1388404628

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:657

約数の個数: 72

約数和(自身を含む): 2722688640

約数和(自身を除く): 1334284012

約数列:

[1, 2, 4, 13, 26, 47, 52, 89, 94, 169, 178, 188, 338, 356, 491, 611, 676, 982, 1157, 1222, 1964, 2314, 2444, 4183, 4628, 6383, 7943, 8366, 12766, 15041, 15886, 16732, 23077, 25532, 30082, 31772, 43699, 46154, 54379, 60164, 82979, 87398, 92308, 108758, 165958, 174796, 217516, 300001, 331916, 568087, 600002, 706927, 1136174, 1200004, 1413854, 2053853, 2272348, 2827708, 3900013, 4107706, 7385131, 7800026, 8215412, 14770262, 15600052, 26700089, 29540524, 53400178, 106800356, 347101157, 694202314, 1388404628]

約数ペア:

[(1, 1388404628), (2, 694202314), (4, 347101157), (13, 106800356), (26, 53400178), (47, 29540524), (52, 26700089), (89, 15600052), (94, 14770262), (169, 8215412), (178, 7800026), (188, 7385131), (338, 4107706), (356, 3900013), (491, 2827708), (611, 2272348), (676, 2053853), (982, 1413854), (1157, 1200004), (1222, 1136174), (1964, 706927), (2314, 600002), (2444, 568087), (4183, 331916), (4628, 300001), (6383, 217516), (7943, 174796), (8366, 165958), (12766, 108758), (15041, 92308), (15886, 87398), (16732, 82979), (23077, 60164), (25532, 54379), (30082, 46154), (31772, 43699)]