19657780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 46418400

約数和(自身を除く): 26760620

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 179, 190, 289, 323, 340, 358, 380, 578, 646, 716, 895, 1156, 1292, 1445, 1615, 1790, 2890, 3043, 3230, 3401, 3580, 5491, 5780, 6086, 6460, 6802, 10982, 12172, 13604, 15215, 17005, 21964, 27455, 30430, 34010, 51731, 54910, 57817, 60860, 68020, 103462, 109820, 115634, 206924, 231268, 258655, 289085, 517310, 578170, 982889, 1034620, 1156340, 1965778, 3931556, 4914445, 9828890, 19657780]

約数ペア:

[(1, 19657780), (2, 9828890), (4, 4914445), (5, 3931556), (10, 1965778), (17, 1156340), (19, 1034620), (20, 982889), (34, 578170), (38, 517310), (68, 289085), (76, 258655), (85, 231268), (95, 206924), (170, 115634), (179, 109820), (190, 103462), (289, 68020), (323, 60860), (340, 57817), (358, 54910), (380, 51731), (578, 34010), (646, 30430), (716, 27455), (895, 21964), (1156, 17005), (1292, 15215), (1445, 13604), (1615, 12172), (1790, 10982), (2890, 6802), (3043, 6460), (3230, 6086), (3401, 5780), (3580, 5491)]