638687070

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{577}}^1$

素因数の和:855

約数の個数: 144

約数和(自身を含む): 1942759728

約数和(自身を除く): 1304072658

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 251, 294, 315, 441, 490, 502, 577, 630, 735, 753, 882, 1154, 1255, 1470, 1506, 1731, 1757, 2205, 2259, 2510, 2885, 3462, 3514, 3765, 4039, 4410, 4518, 5193, 5271, 5770, 7530, 8078, 8655, 8785, 10386, 10542, 11295, 12117, 12299, 15813, 17310, 17570, 20195, 22590, 24234, 24598, 25965, 26355, 28273, 31626, 36351, 36897, 40390, 51930, 52710, 56546, 60585, 61495, 72702, 73794, 79065, 84819, 110691, 121170, 122990, 141365, 144827, 158130, 169638, 181755, 184485, 221382, 254457, 282730, 289654, 363510, 368970, 424095, 434481, 508914, 553455, 724135, 848190, 868962, 1013789, 1106910, 1272285, 1303443, 1448270, 2027578, 2172405, 2544570, 2606886, 3041367, 4344810, 5068945, 6082734, 6517215, 7096523, 9124101, 10137890, 13034430, 14193046, 15206835, 18248202, 21289569, 30413670, 35482615, 42579138, 45620505, 63868707, 70965230, 91241010, 106447845, 127737414, 212895690, 319343535, 638687070]

約数ペア:

[(1, 638687070), (2, 319343535), (3, 212895690), (5, 127737414), (6, 106447845), (7, 91241010), (9, 70965230), (10, 63868707), (14, 45620505), (15, 42579138), (18, 35482615), (21, 30413670), (30, 21289569), (35, 18248202), (42, 15206835), (45, 14193046), (49, 13034430), (63, 10137890), (70, 9124101), (90, 7096523), (98, 6517215), (105, 6082734), (126, 5068945), (147, 4344810), (210, 3041367), (245, 2606886), (251, 2544570), (294, 2172405), (315, 2027578), (441, 1448270), (490, 1303443), (502, 1272285), (577, 1106910), (630, 1013789), (735, 868962), (753, 848190), (882, 724135), (1154, 553455), (1255, 508914), (1470, 434481), (1506, 424095), (1731, 368970), (1757, 363510), (2205, 289654), (2259, 282730), (2510, 254457), (2885, 221382), (3462, 184485), (3514, 181755), (3765, 169638), (4039, 158130), (4410, 144827), (4518, 141365), (5193, 122990), (5271, 121170), (5770, 110691), (7530, 84819), (8078, 79065), (8655, 73794), (8785, 72702), (10386, 61495), (10542, 60585), (11295, 56546), (12117, 52710), (12299, 51930), (15813, 40390), (17310, 36897), (17570, 36351), (20195, 31626), (22590, 28273), (24234, 26355), (24598, 25965)]