18780190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{571}}^1$

素因数の和:625

約数の個数: 64

約数和(自身を含む): 41513472

約数和(自身を除く): 22733282

約数列:

[1, 2, 5, 10, 11, 13, 22, 23, 26, 46, 55, 65, 110, 115, 130, 143, 230, 253, 286, 299, 506, 571, 598, 715, 1142, 1265, 1430, 1495, 2530, 2855, 2990, 3289, 5710, 6281, 6578, 7423, 12562, 13133, 14846, 16445, 26266, 31405, 32890, 37115, 62810, 65665, 74230, 81653, 131330, 144463, 163306, 170729, 288926, 341458, 408265, 722315, 816530, 853645, 1444630, 1707290, 1878019, 3756038, 9390095, 18780190]

約数ペア:

[(1, 18780190), (2, 9390095), (5, 3756038), (10, 1878019), (11, 1707290), (13, 1444630), (22, 853645), (23, 816530), (26, 722315), (46, 408265), (55, 341458), (65, 288926), (110, 170729), (115, 163306), (130, 144463), (143, 131330), (230, 81653), (253, 74230), (286, 65665), (299, 62810), (506, 37115), (571, 32890), (598, 31405), (715, 26266), (1142, 16445), (1265, 14846), (1430, 13133), (1495, 12562), (2530, 7423), (2855, 6578), (2990, 6281), (3289, 5710)]