19446640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 48746880

約数和(自身を除く): 29300240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 79, 80, 85, 136, 158, 170, 181, 272, 316, 340, 362, 395, 632, 680, 724, 790, 905, 1264, 1343, 1360, 1448, 1580, 1810, 2686, 2896, 3077, 3160, 3620, 5372, 6154, 6320, 6715, 7240, 10744, 12308, 13430, 14299, 14480, 15385, 21488, 24616, 26860, 28598, 30770, 49232, 53720, 57196, 61540, 71495, 107440, 114392, 123080, 142990, 228784, 243083, 246160, 285980, 486166, 571960, 972332, 1143920, 1215415, 1944664, 2430830, 3889328, 4861660, 9723320, 19446640]

約数ペア:

[(1, 19446640), (2, 9723320), (4, 4861660), (5, 3889328), (8, 2430830), (10, 1944664), (16, 1215415), (17, 1143920), (20, 972332), (34, 571960), (40, 486166), (68, 285980), (79, 246160), (80, 243083), (85, 228784), (136, 142990), (158, 123080), (170, 114392), (181, 107440), (272, 71495), (316, 61540), (340, 57196), (362, 53720), (395, 49232), (632, 30770), (680, 28598), (724, 26860), (790, 24616), (905, 21488), (1264, 15385), (1343, 14480), (1360, 14299), (1448, 13430), (1580, 12308), (1810, 10744), (2686, 7240), (2896, 6715), (3077, 6320), (3160, 6154), (3620, 5372)]