20996870512

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{709}}^1\times {\mathrm{1597}}^1$

素因数の和:2394

約数の個数: 80

約数和(自身を含む): 43613255200

約数和(自身を除く): 22616384688

約数列:

[1, 2, 4, 8, 16, 19, 38, 61, 76, 122, 152, 244, 304, 488, 709, 976, 1159, 1418, 1597, 2318, 2836, 3194, 4636, 5672, 6388, 9272, 11344, 12776, 13471, 18544, 25552, 26942, 30343, 43249, 53884, 60686, 86498, 97417, 107768, 121372, 172996, 194834, 215536, 242744, 345992, 389668, 485488, 691984, 779336, 821731, 1132273, 1558672, 1643462, 1850923, 2264546, 3286924, 3701846, 4529092, 6573848, 7403692, 9058184, 13147696, 14807384, 18116368, 21513187, 29614768, 43026374, 69068653, 86052748, 138137306, 172105496, 276274612, 344210992, 552549224, 1105098448, 1312304407, 2624608814, 5249217628, 10498435256, 20996870512]

約数ペア:

[(1, 20996870512), (2, 10498435256), (4, 5249217628), (8, 2624608814), (16, 1312304407), (19, 1105098448), (38, 552549224), (61, 344210992), (76, 276274612), (122, 172105496), (152, 138137306), (244, 86052748), (304, 69068653), (488, 43026374), (709, 29614768), (976, 21513187), (1159, 18116368), (1418, 14807384), (1597, 13147696), (2318, 9058184), (2836, 7403692), (3194, 6573848), (4636, 4529092), (5672, 3701846), (6388, 3286924), (9272, 2264546), (11344, 1850923), (12776, 1643462), (13471, 1558672), (18544, 1132273), (25552, 821731), (26942, 779336), (30343, 691984), (43249, 485488), (53884, 389668), (60686, 345992), (86498, 242744), (97417, 215536), (107768, 194834), (121372, 172996)]