64415320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{647}}^1$

素因数の和:808

約数の個数: 64

約数和(自身を含む): 153964800

約数和(自身を除く): 89549480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 131, 152, 190, 262, 380, 524, 647, 655, 760, 1048, 1294, 1310, 2489, 2588, 2620, 3235, 4978, 5176, 5240, 6470, 9956, 12293, 12445, 12940, 19912, 24586, 24890, 25880, 49172, 49780, 61465, 84757, 98344, 99560, 122930, 169514, 245860, 339028, 423785, 491720, 678056, 847570, 1610383, 1695140, 3220766, 3390280, 6441532, 8051915, 12883064, 16103830, 32207660, 64415320]

約数ペア:

[(1, 64415320), (2, 32207660), (4, 16103830), (5, 12883064), (8, 8051915), (10, 6441532), (19, 3390280), (20, 3220766), (38, 1695140), (40, 1610383), (76, 847570), (95, 678056), (131, 491720), (152, 423785), (190, 339028), (262, 245860), (380, 169514), (524, 122930), (647, 99560), (655, 98344), (760, 84757), (1048, 61465), (1294, 49780), (1310, 49172), (2489, 25880), (2588, 24890), (2620, 24586), (3235, 19912), (4978, 12940), (5176, 12445), (5240, 12293), (6470, 9956)]