19654720

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3613}}^1$

素因数の和:3647

約数の個数: 56

約数和(自身を含む): 49569624

約数和(自身を除く): 29914904

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3613, 5440, 7226, 14452, 18065, 28904, 36130, 57808, 61421, 72260, 115616, 122842, 144520, 231232, 245684, 289040, 307105, 491368, 578080, 614210, 982736, 1156160, 1228420, 1965472, 2456840, 3930944, 4913680, 9827360, 19654720]

約数ペア:

[(1, 19654720), (2, 9827360), (4, 4913680), (5, 3930944), (8, 2456840), (10, 1965472), (16, 1228420), (17, 1156160), (20, 982736), (32, 614210), (34, 578080), (40, 491368), (64, 307105), (68, 289040), (80, 245684), (85, 231232), (136, 144520), (160, 122842), (170, 115616), (272, 72260), (320, 61421), (340, 57808), (544, 36130), (680, 28904), (1088, 18065), (1360, 14452), (2720, 7226), (3613, 5440)]