19414990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 23715890

約数列:

[1, 2, 5, 7, 10, 14, 23, 31, 35, 46, 62, 70, 115, 155, 161, 217, 230, 310, 322, 389, 434, 713, 778, 805, 1085, 1426, 1610, 1945, 2170, 2723, 3565, 3890, 4991, 5446, 7130, 8947, 9982, 12059, 13615, 17894, 24118, 24955, 27230, 44735, 49910, 60295, 62629, 84413, 89470, 120590, 125258, 168826, 277357, 313145, 422065, 554714, 626290, 844130, 1386785, 1941499, 2773570, 3882998, 9707495, 19414990]

約数ペア:

[(1, 19414990), (2, 9707495), (5, 3882998), (7, 2773570), (10, 1941499), (14, 1386785), (23, 844130), (31, 626290), (35, 554714), (46, 422065), (62, 313145), (70, 277357), (115, 168826), (155, 125258), (161, 120590), (217, 89470), (230, 84413), (310, 62629), (322, 60295), (389, 49910), (434, 44735), (713, 27230), (778, 24955), (805, 24118), (1085, 17894), (1426, 13615), (1610, 12059), (1945, 9982), (2170, 8947), (2723, 7130), (3565, 5446), (3890, 4991)]