17969990

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 33346080

約数和(自身を除く): 15376090

約数列:

[1, 2, 5, 10, 61, 89, 122, 178, 305, 331, 445, 610, 662, 890, 1655, 3310, 5429, 10858, 20191, 27145, 29459, 40382, 54290, 58918, 100955, 147295, 201910, 294590, 1796999, 3593998, 8984995, 17969990]

約数ペア:

[(1, 17969990), (2, 8984995), (5, 3593998), (10, 1796999), (61, 294590), (89, 201910), (122, 147295), (178, 100955), (305, 58918), (331, 54290), (445, 40382), (610, 29459), (662, 27145), (890, 20191), (1655, 10858), (3310, 5429)]