18828225

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 37440312

約数和(自身を除く): 18612087

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 41, 45, 65, 75, 117, 123, 157, 195, 205, 225, 325, 369, 471, 533, 585, 615, 785, 975, 1025, 1413, 1599, 1845, 2041, 2355, 2665, 2925, 3075, 3925, 4797, 6123, 6437, 7065, 7995, 9225, 10205, 11775, 13325, 18369, 19311, 23985, 30615, 32185, 35325, 39975, 51025, 57933, 83681, 91845, 96555, 119925, 153075, 160925, 251043, 289665, 418405, 459225, 482775, 753129, 1255215, 1448325, 2092025, 3765645, 6276075, 18828225]

約数ペア:

[(1, 18828225), (3, 6276075), (5, 3765645), (9, 2092025), (13, 1448325), (15, 1255215), (25, 753129), (39, 482775), (41, 459225), (45, 418405), (65, 289665), (75, 251043), (117, 160925), (123, 153075), (157, 119925), (195, 96555), (205, 91845), (225, 83681), (325, 57933), (369, 51025), (471, 39975), (533, 35325), (585, 32185), (615, 30615), (785, 23985), (975, 19311), (1025, 18369), (1413, 13325), (1599, 11775), (1845, 10205), (2041, 9225), (2355, 7995), (2665, 7065), (2925, 6437), (3075, 6123), (3925, 4797)]