646100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1$

素因数の和:105

約数の個数: 72

約数和(自身を含む): 1749888

約数和(自身を除く): 1103788

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 71, 91, 100, 130, 140, 142, 175, 182, 260, 284, 325, 350, 355, 364, 455, 497, 650, 700, 710, 910, 923, 994, 1300, 1420, 1775, 1820, 1846, 1988, 2275, 2485, 3550, 3692, 4550, 4615, 4970, 6461, 7100, 9100, 9230, 9940, 12425, 12922, 18460, 23075, 24850, 25844, 32305, 46150, 49700, 64610, 92300, 129220, 161525, 323050, 646100]

約数ペア:

[(1, 646100), (2, 323050), (4, 161525), (5, 129220), (7, 92300), (10, 64610), (13, 49700), (14, 46150), (20, 32305), (25, 25844), (26, 24850), (28, 23075), (35, 18460), (50, 12922), (52, 12425), (65, 9940), (70, 9230), (71, 9100), (91, 7100), (100, 6461), (130, 4970), (140, 4615), (142, 4550), (175, 3692), (182, 3550), (260, 2485), (284, 2275), (325, 1988), (350, 1846), (355, 1820), (364, 1775), (455, 1420), (497, 1300), (650, 994), (700, 923), (710, 910)]