28714980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{9767}}^1$

素因数の和:9793

約数の個数: 72

約数和(自身を含む): 93538368

約数和(自身を除く): 64823388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 9767, 19534, 29301, 39068, 48835, 58602, 68369, 97670, 117204, 136738, 146505, 195340, 205107, 273476, 293010, 341845, 410214, 478583, 586020, 683690, 820428, 957166, 1025535, 1367380, 1435749, 1914332, 2051070, 2392915, 2871498, 4102140, 4785830, 5742996, 7178745, 9571660, 14357490, 28714980]

約数ペア:

[(1, 28714980), (2, 14357490), (3, 9571660), (4, 7178745), (5, 5742996), (6, 4785830), (7, 4102140), (10, 2871498), (12, 2392915), (14, 2051070), (15, 1914332), (20, 1435749), (21, 1367380), (28, 1025535), (30, 957166), (35, 820428), (42, 683690), (49, 586020), (60, 478583), (70, 410214), (84, 341845), (98, 293010), (105, 273476), (140, 205107), (147, 195340), (196, 146505), (210, 136738), (245, 117204), (294, 97670), (420, 68369), (490, 58602), (588, 48835), (735, 39068), (980, 29301), (1470, 19534), (2940, 9767)]