640223994

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:475

約数の個数: 64

約数和(自身を含む): 1339545600

約数和(自身を除く): 699321606

約数列:

[1, 2, 3, 6, 53, 67, 106, 134, 151, 159, 199, 201, 302, 318, 398, 402, 453, 597, 906, 1194, 3551, 7102, 8003, 10117, 10547, 10653, 13333, 16006, 20234, 21094, 21306, 24009, 26666, 30049, 30351, 31641, 39999, 48018, 60098, 60702, 63282, 79998, 90147, 180294, 536201, 706649, 1072402, 1413298, 1592597, 1608603, 2013283, 2119947, 3185194, 3217206, 4026566, 4239894, 4777791, 6039849, 9555582, 12079698, 106703999, 213407998, 320111997, 640223994]

約数ペア:

[(1, 640223994), (2, 320111997), (3, 213407998), (6, 106703999), (53, 12079698), (67, 9555582), (106, 6039849), (134, 4777791), (151, 4239894), (159, 4026566), (199, 3217206), (201, 3185194), (302, 2119947), (318, 2013283), (398, 1608603), (402, 1592597), (453, 1413298), (597, 1072402), (906, 706649), (1194, 536201), (3551, 180294), (7102, 90147), (8003, 79998), (10117, 63282), (10547, 60702), (10653, 60098), (13333, 48018), (16006, 39999), (20234, 31641), (21094, 30351), (21306, 30049), (24009, 26666)]