19431885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 17063475

約数列:

[1, 3, 5, 11, 15, 29, 31, 33, 55, 87, 93, 131, 145, 155, 165, 319, 341, 393, 435, 465, 655, 899, 957, 1023, 1441, 1595, 1705, 1965, 2697, 3799, 4061, 4323, 4495, 4785, 5115, 7205, 9889, 11397, 12183, 13485, 18995, 20305, 21615, 29667, 41789, 44671, 49445, 56985, 60915, 117769, 125367, 134013, 148335, 208945, 223355, 353307, 588845, 626835, 670065, 1295459, 1766535, 3886377, 6477295, 19431885]

約数ペア:

[(1, 19431885), (3, 6477295), (5, 3886377), (11, 1766535), (15, 1295459), (29, 670065), (31, 626835), (33, 588845), (55, 353307), (87, 223355), (93, 208945), (131, 148335), (145, 134013), (155, 125367), (165, 117769), (319, 60915), (341, 56985), (393, 49445), (435, 44671), (465, 41789), (655, 29667), (899, 21615), (957, 20305), (1023, 18995), (1441, 13485), (1595, 12183), (1705, 11397), (1965, 9889), (2697, 7205), (3799, 5115), (4061, 4785), (4323, 4495)]