28381908

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{263}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 73579968

約数和(自身を除く): 45198060

約数列:

[1, 2, 3, 4, 6, 12, 17, 23, 34, 46, 51, 68, 69, 92, 102, 138, 204, 263, 276, 391, 526, 529, 782, 789, 1052, 1058, 1173, 1564, 1578, 1587, 2116, 2346, 3156, 3174, 4471, 4692, 6049, 6348, 8942, 8993, 12098, 13413, 17884, 17986, 18147, 24196, 26826, 26979, 35972, 36294, 53652, 53958, 72588, 102833, 107916, 139127, 205666, 278254, 308499, 411332, 417381, 556508, 616998, 834762, 1233996, 1669524, 2365159, 4730318, 7095477, 9460636, 14190954, 28381908]

約数ペア:

[(1, 28381908), (2, 14190954), (3, 9460636), (4, 7095477), (6, 4730318), (12, 2365159), (17, 1669524), (23, 1233996), (34, 834762), (46, 616998), (51, 556508), (68, 417381), (69, 411332), (92, 308499), (102, 278254), (138, 205666), (204, 139127), (263, 107916), (276, 102833), (391, 72588), (526, 53958), (529, 53652), (782, 36294), (789, 35972), (1052, 26979), (1058, 26826), (1173, 24196), (1564, 18147), (1578, 17986), (1587, 17884), (2116, 13413), (2346, 12098), (3156, 8993), (3174, 8942), (4471, 6348), (4692, 6049)]