20713160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{653}}^1$

素因数の和:738

約数の個数: 64

約数和(自身を含む): 51090480

約数和(自身を除く): 30377320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 653, 793, 1220, 1306, 1586, 2440, 2612, 3172, 3265, 3965, 5224, 6344, 6530, 7930, 8489, 13060, 15860, 16978, 26120, 31720, 33956, 39833, 42445, 67912, 79666, 84890, 159332, 169780, 199165, 318664, 339560, 398330, 517829, 796660, 1035658, 1593320, 2071316, 2589145, 4142632, 5178290, 10356580, 20713160]

約数ペア:

[(1, 20713160), (2, 10356580), (4, 5178290), (5, 4142632), (8, 2589145), (10, 2071316), (13, 1593320), (20, 1035658), (26, 796660), (40, 517829), (52, 398330), (61, 339560), (65, 318664), (104, 199165), (122, 169780), (130, 159332), (244, 84890), (260, 79666), (305, 67912), (488, 42445), (520, 39833), (610, 33956), (653, 31720), (793, 26120), (1220, 16978), (1306, 15860), (1586, 13060), (2440, 8489), (2612, 7930), (3172, 6530), (3265, 6344), (3965, 5224)]