19741228

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 41504400

約数和(自身を除く): 21763172

約数列:

[1, 2, 4, 13, 19, 26, 29, 38, 52, 53, 58, 76, 106, 116, 169, 212, 247, 338, 377, 494, 551, 676, 689, 754, 988, 1007, 1102, 1378, 1508, 1537, 2014, 2204, 2756, 3074, 3211, 4028, 4901, 6148, 6422, 7163, 8957, 9802, 12844, 13091, 14326, 17914, 19604, 19981, 26182, 28652, 29203, 35828, 39962, 52364, 58406, 79924, 93119, 116812, 170183, 186238, 259753, 340366, 372476, 379639, 519506, 680732, 759278, 1039012, 1518556, 4935307, 9870614, 19741228]

約数ペア:

[(1, 19741228), (2, 9870614), (4, 4935307), (13, 1518556), (19, 1039012), (26, 759278), (29, 680732), (38, 519506), (52, 379639), (53, 372476), (58, 340366), (76, 259753), (106, 186238), (116, 170183), (169, 116812), (212, 93119), (247, 79924), (338, 58406), (377, 52364), (494, 39962), (551, 35828), (676, 29203), (689, 28652), (754, 26182), (988, 19981), (1007, 19604), (1102, 17914), (1378, 14326), (1508, 13091), (1537, 12844), (2014, 9802), (2204, 8957), (2756, 7163), (3074, 6422), (3211, 6148), (4028, 4901)]