18814120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{373}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 46181520

約数和(自身を除く): 27367400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 97, 104, 130, 194, 260, 373, 388, 485, 520, 746, 776, 970, 1261, 1492, 1865, 1940, 2522, 2984, 3730, 3880, 4849, 5044, 6305, 7460, 9698, 10088, 12610, 14920, 19396, 24245, 25220, 36181, 38792, 48490, 50440, 72362, 96980, 144724, 180905, 193960, 289448, 361810, 470353, 723620, 940706, 1447240, 1881412, 2351765, 3762824, 4703530, 9407060, 18814120]

約数ペア:

[(1, 18814120), (2, 9407060), (4, 4703530), (5, 3762824), (8, 2351765), (10, 1881412), (13, 1447240), (20, 940706), (26, 723620), (40, 470353), (52, 361810), (65, 289448), (97, 193960), (104, 180905), (130, 144724), (194, 96980), (260, 72362), (373, 50440), (388, 48490), (485, 38792), (520, 36181), (746, 25220), (776, 24245), (970, 19396), (1261, 14920), (1492, 12610), (1865, 10088), (1940, 9698), (2522, 7460), (2984, 6305), (3730, 5044), (3880, 4849)]