19813760

素因数分解:

$2^7\times 5^1\times {\mathrm{83}}^1\times {\mathrm{373}}^1$

素因数の和:475

約数の個数: 64

約数和(自身を含む): 48066480

約数和(自身を除く): 28252720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 128, 160, 166, 320, 332, 373, 415, 640, 664, 746, 830, 1328, 1492, 1660, 1865, 2656, 2984, 3320, 3730, 5312, 5968, 6640, 7460, 10624, 11936, 13280, 14920, 23872, 26560, 29840, 30959, 47744, 53120, 59680, 61918, 119360, 123836, 154795, 238720, 247672, 309590, 495344, 619180, 990688, 1238360, 1981376, 2476720, 3962752, 4953440, 9906880, 19813760]

約数ペア:

[(1, 19813760), (2, 9906880), (4, 4953440), (5, 3962752), (8, 2476720), (10, 1981376), (16, 1238360), (20, 990688), (32, 619180), (40, 495344), (64, 309590), (80, 247672), (83, 238720), (128, 154795), (160, 123836), (166, 119360), (320, 61918), (332, 59680), (373, 53120), (415, 47744), (640, 30959), (664, 29840), (746, 26560), (830, 23872), (1328, 14920), (1492, 13280), (1660, 11936), (1865, 10624), (2656, 7460), (2984, 6640), (3320, 5968), (3730, 5312)]