64988420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{16007}}^1$

素因数の和:16052

約数の個数: 48

約数和(自身を含む): 161360640

約数和(自身を除く): 96372220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 16007, 32014, 64028, 80035, 112049, 160070, 224098, 320140, 448196, 464203, 560245, 928406, 1120490, 1856812, 2240980, 2321015, 3249421, 4642030, 6498842, 9284060, 12997684, 16247105, 32494210, 64988420]

約数ペア:

[(1, 64988420), (2, 32494210), (4, 16247105), (5, 12997684), (7, 9284060), (10, 6498842), (14, 4642030), (20, 3249421), (28, 2321015), (29, 2240980), (35, 1856812), (58, 1120490), (70, 928406), (116, 560245), (140, 464203), (145, 448196), (203, 320140), (290, 224098), (406, 160070), (580, 112049), (812, 80035), (1015, 64028), (2030, 32014), (4060, 16007)]