81549390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{991}}^1$

素因数の和:1225

約数の個数: 64

約数和(自身を含む): 211986432

約数和(自身を除く): 130437042

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 211, 390, 422, 633, 991, 1055, 1266, 1982, 2110, 2743, 2973, 3165, 4955, 5486, 5946, 6330, 8229, 9910, 12883, 13715, 14865, 16458, 25766, 27430, 29730, 38649, 41145, 64415, 77298, 82290, 128830, 193245, 209101, 386490, 418202, 627303, 1045505, 1254606, 2091010, 2718313, 3136515, 5436626, 6273030, 8154939, 13591565, 16309878, 27183130, 40774695, 81549390]

約数ペア:

[(1, 81549390), (2, 40774695), (3, 27183130), (5, 16309878), (6, 13591565), (10, 8154939), (13, 6273030), (15, 5436626), (26, 3136515), (30, 2718313), (39, 2091010), (65, 1254606), (78, 1045505), (130, 627303), (195, 418202), (211, 386490), (390, 209101), (422, 193245), (633, 128830), (991, 82290), (1055, 77298), (1266, 64415), (1982, 41145), (2110, 38649), (2743, 29730), (2973, 27430), (3165, 25766), (4955, 16458), (5486, 14865), (5946, 13715), (6330, 12883), (8229, 9910)]