215915980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:643

約数の個数: 96

約数和(自身を含む): 552375936

約数和(自身を除く): 336459956

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 257, 340, 353, 476, 514, 595, 706, 1028, 1190, 1285, 1412, 1765, 1799, 2380, 2471, 2570, 3530, 3598, 4369, 4942, 5140, 6001, 7060, 7196, 8738, 8995, 9884, 12002, 12355, 17476, 17990, 21845, 24004, 24710, 30005, 30583, 35980, 42007, 43690, 49420, 60010, 61166, 84014, 87380, 90721, 120020, 122332, 152915, 168028, 181442, 210035, 305830, 362884, 420070, 453605, 611660, 635047, 840140, 907210, 1270094, 1542257, 1814420, 2540188, 3084514, 3175235, 6169028, 6350470, 7711285, 10795799, 12700940, 15422570, 21591598, 30845140, 43183196, 53978995, 107957990, 215915980]

約数ペア:

[(1, 215915980), (2, 107957990), (4, 53978995), (5, 43183196), (7, 30845140), (10, 21591598), (14, 15422570), (17, 12700940), (20, 10795799), (28, 7711285), (34, 6350470), (35, 6169028), (68, 3175235), (70, 3084514), (85, 2540188), (119, 1814420), (140, 1542257), (170, 1270094), (238, 907210), (257, 840140), (340, 635047), (353, 611660), (476, 453605), (514, 420070), (595, 362884), (706, 305830), (1028, 210035), (1190, 181442), (1285, 168028), (1412, 152915), (1765, 122332), (1799, 120020), (2380, 90721), (2471, 87380), (2570, 84014), (3530, 61166), (3598, 60010), (4369, 49420), (4942, 43690), (5140, 42007), (6001, 35980), (7060, 30583), (7196, 30005), (8738, 24710), (8995, 24004), (9884, 21845), (12002, 17990), (12355, 17476)]