19001988

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{509}}^1$

素因数の和:597

約数の個数: 72

約数和(自身を含む): 51793560

約数和(自身を除く): 32791572

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 61, 68, 102, 122, 153, 183, 204, 244, 306, 366, 509, 549, 612, 732, 1018, 1037, 1098, 1527, 2036, 2074, 2196, 3054, 3111, 4148, 4581, 6108, 6222, 8653, 9162, 9333, 12444, 17306, 18324, 18666, 25959, 31049, 34612, 37332, 51918, 62098, 77877, 93147, 103836, 124196, 155754, 186294, 279441, 311508, 372588, 527833, 558882, 1055666, 1117764, 1583499, 2111332, 3166998, 4750497, 6333996, 9500994, 19001988]

約数ペア:

[(1, 19001988), (2, 9500994), (3, 6333996), (4, 4750497), (6, 3166998), (9, 2111332), (12, 1583499), (17, 1117764), (18, 1055666), (34, 558882), (36, 527833), (51, 372588), (61, 311508), (68, 279441), (102, 186294), (122, 155754), (153, 124196), (183, 103836), (204, 93147), (244, 77877), (306, 62098), (366, 51918), (509, 37332), (549, 34612), (612, 31049), (732, 25959), (1018, 18666), (1037, 18324), (1098, 17306), (1527, 12444), (2036, 9333), (2074, 9162), (2196, 8653), (3054, 6222), (3111, 6108), (4148, 4581)]