28905516

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:539

約数の個数: 72

約数和(自身を含む): 76876800

約数和(自身を除く): 47971284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 59, 62, 93, 118, 124, 177, 186, 236, 279, 354, 372, 439, 531, 558, 708, 878, 1062, 1116, 1317, 1756, 1829, 2124, 2634, 3658, 3951, 5268, 5487, 7316, 7902, 10974, 13609, 15804, 16461, 21948, 25901, 27218, 32922, 40827, 51802, 54436, 65844, 77703, 81654, 103604, 122481, 155406, 163308, 233109, 244962, 310812, 466218, 489924, 802931, 932436, 1605862, 2408793, 3211724, 4817586, 7226379, 9635172, 14452758, 28905516]

約数ペア:

[(1, 28905516), (2, 14452758), (3, 9635172), (4, 7226379), (6, 4817586), (9, 3211724), (12, 2408793), (18, 1605862), (31, 932436), (36, 802931), (59, 489924), (62, 466218), (93, 310812), (118, 244962), (124, 233109), (177, 163308), (186, 155406), (236, 122481), (279, 103604), (354, 81654), (372, 77703), (439, 65844), (531, 54436), (558, 51802), (708, 40827), (878, 32922), (1062, 27218), (1116, 25901), (1317, 21948), (1756, 16461), (1829, 15804), (2124, 13609), (2634, 10974), (3658, 7902), (3951, 7316), (5268, 5487)]