644520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 1995840

約数和(自身を除く): 1351320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 82, 120, 123, 131, 164, 205, 246, 262, 328, 393, 410, 492, 524, 615, 655, 786, 820, 984, 1048, 1230, 1310, 1572, 1640, 1965, 2460, 2620, 3144, 3930, 4920, 5240, 5371, 7860, 10742, 15720, 16113, 21484, 26855, 32226, 42968, 53710, 64452, 80565, 107420, 128904, 161130, 214840, 322260, 644520]

約数ペア:

[(1, 644520), (2, 322260), (3, 214840), (4, 161130), (5, 128904), (6, 107420), (8, 80565), (10, 64452), (12, 53710), (15, 42968), (20, 32226), (24, 26855), (30, 21484), (40, 16113), (41, 15720), (60, 10742), (82, 7860), (120, 5371), (123, 5240), (131, 4920), (164, 3930), (205, 3144), (246, 2620), (262, 2460), (328, 1965), (393, 1640), (410, 1572), (492, 1310), (524, 1230), (615, 1048), (655, 984), (786, 820)]