28619920

素因数分解:

$2^4\times 5^1\times 7^4\times {\mathrm{149}}^1$

素因数の和:190

約数の個数: 100

約数和(自身を含む): 78147900

約数和(自身を除く): 49527980

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 149, 196, 245, 280, 298, 343, 392, 490, 560, 596, 686, 745, 784, 980, 1043, 1192, 1372, 1490, 1715, 1960, 2086, 2384, 2401, 2744, 2980, 3430, 3920, 4172, 4802, 5215, 5488, 5960, 6860, 7301, 8344, 9604, 10430, 11920, 12005, 13720, 14602, 16688, 19208, 20860, 24010, 27440, 29204, 36505, 38416, 41720, 48020, 51107, 58408, 73010, 83440, 96040, 102214, 116816, 146020, 192080, 204428, 255535, 292040, 357749, 408856, 511070, 584080, 715498, 817712, 1022140, 1430996, 1788745, 2044280, 2861992, 3577490, 4088560, 5723984, 7154980, 14309960, 28619920]

約数ペア:

[(1, 28619920), (2, 14309960), (4, 7154980), (5, 5723984), (7, 4088560), (8, 3577490), (10, 2861992), (14, 2044280), (16, 1788745), (20, 1430996), (28, 1022140), (35, 817712), (40, 715498), (49, 584080), (56, 511070), (70, 408856), (80, 357749), (98, 292040), (112, 255535), (140, 204428), (149, 192080), (196, 146020), (245, 116816), (280, 102214), (298, 96040), (343, 83440), (392, 73010), (490, 58408), (560, 51107), (596, 48020), (686, 41720), (745, 38416), (784, 36505), (980, 29204), (1043, 27440), (1192, 24010), (1372, 20860), (1490, 19208), (1715, 16688), (1960, 14602), (2086, 13720), (2384, 12005), (2401, 11920), (2744, 10430), (2980, 9604), (3430, 8344), (3920, 7301), (4172, 6860), (4802, 5960), (5215, 5488)]