19812430

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 21991346

約数列:

[1, 2, 5, 10, 11, 22, 23, 41, 46, 55, 82, 110, 115, 191, 205, 230, 253, 382, 410, 451, 506, 902, 943, 955, 1265, 1886, 1910, 2101, 2255, 2530, 4202, 4393, 4510, 4715, 7831, 8786, 9430, 10373, 10505, 15662, 20746, 21010, 21965, 39155, 43930, 48323, 51865, 78310, 86141, 96646, 103730, 172282, 180113, 241615, 360226, 430705, 483230, 861410, 900565, 1801130, 1981243, 3962486, 9906215, 19812430]

約数ペア:

[(1, 19812430), (2, 9906215), (5, 3962486), (10, 1981243), (11, 1801130), (22, 900565), (23, 861410), (41, 483230), (46, 430705), (55, 360226), (82, 241615), (110, 180113), (115, 172282), (191, 103730), (205, 96646), (230, 86141), (253, 78310), (382, 51865), (410, 48323), (451, 43930), (506, 39155), (902, 21965), (943, 21010), (955, 20746), (1265, 15662), (1886, 10505), (1910, 10373), (2101, 9430), (2255, 8786), (2530, 7831), (4202, 4715), (4393, 4510)]