21000819848

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{593}}^1\times {\mathrm{2389}}^1$

素因数の和:3114

約数の個数: 64

約数和(自身を含む): 42163902000

約数和(自身を除く): 21163082152

約数列:

[1, 2, 4, 8, 17, 34, 68, 109, 136, 218, 436, 593, 872, 1186, 1853, 2372, 2389, 3706, 4744, 4778, 7412, 9556, 10081, 14824, 19112, 20162, 40324, 40613, 64637, 80648, 81226, 129274, 162452, 258548, 260401, 324904, 517096, 520802, 1041604, 1098829, 1416677, 2083208, 2197658, 2833354, 4395316, 4426817, 5666708, 8790632, 8853634, 11333416, 17707268, 24083509, 35414536, 48167018, 96334036, 154417793, 192668072, 308835586, 617671172, 1235342344, 2625102481, 5250204962, 10500409924, 21000819848]

約数ペア:

[(1, 21000819848), (2, 10500409924), (4, 5250204962), (8, 2625102481), (17, 1235342344), (34, 617671172), (68, 308835586), (109, 192668072), (136, 154417793), (218, 96334036), (436, 48167018), (593, 35414536), (872, 24083509), (1186, 17707268), (1853, 11333416), (2372, 8853634), (2389, 8790632), (3706, 5666708), (4744, 4426817), (4778, 4395316), (7412, 2833354), (9556, 2197658), (10081, 2083208), (14824, 1416677), (19112, 1098829), (20162, 1041604), (40324, 520802), (40613, 517096), (64637, 324904), (80648, 260401), (81226, 258548), (129274, 162452)]