161689040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1949}}^1$

素因数の和:2040

約数の個数: 80

約数和(自身を含む): 404773200

約数和(自身を除く): 243084160

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 61, 68, 80, 85, 122, 136, 170, 244, 272, 305, 340, 488, 610, 680, 976, 1037, 1220, 1360, 1949, 2074, 2440, 3898, 4148, 4880, 5185, 7796, 8296, 9745, 10370, 15592, 16592, 19490, 20740, 31184, 33133, 38980, 41480, 66266, 77960, 82960, 118889, 132532, 155920, 165665, 237778, 265064, 331330, 475556, 530128, 594445, 662660, 951112, 1188890, 1325320, 1902224, 2021113, 2377780, 2650640, 4042226, 4755560, 8084452, 9511120, 10105565, 16168904, 20211130, 32337808, 40422260, 80844520, 161689040]

約数ペア:

[(1, 161689040), (2, 80844520), (4, 40422260), (5, 32337808), (8, 20211130), (10, 16168904), (16, 10105565), (17, 9511120), (20, 8084452), (34, 4755560), (40, 4042226), (61, 2650640), (68, 2377780), (80, 2021113), (85, 1902224), (122, 1325320), (136, 1188890), (170, 951112), (244, 662660), (272, 594445), (305, 530128), (340, 475556), (488, 331330), (610, 265064), (680, 237778), (976, 165665), (1037, 155920), (1220, 132532), (1360, 118889), (1949, 82960), (2074, 77960), (2440, 66266), (3898, 41480), (4148, 38980), (4880, 33133), (5185, 31184), (7796, 20740), (8296, 19490), (9745, 16592), (10370, 15592)]