788978890

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 1764633600

約数和(自身を除く): 975654710

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 73, 98, 115, 137, 146, 161, 230, 245, 274, 322, 343, 365, 490, 511, 685, 686, 730, 805, 959, 1022, 1127, 1370, 1610, 1679, 1715, 1918, 2254, 2555, 3151, 3358, 3430, 3577, 4795, 5110, 5635, 6302, 6713, 7154, 7889, 8395, 9590, 10001, 11270, 11753, 13426, 15755, 15778, 16790, 17885, 20002, 22057, 23506, 25039, 31510, 33565, 35770, 39445, 44114, 46991, 50005, 50078, 58765, 67130, 70007, 78890, 82271, 93982, 100010, 110285, 117530, 125195, 140014, 154399, 164542, 220570, 230023, 234955, 250390, 308798, 350035, 411355, 460046, 469910, 490049, 575897, 700070, 771995, 822710, 980098, 1080793, 1150115, 1151794, 1543990, 1610161, 2161586, 2300230, 2450245, 2879485, 3220322, 3430343, 4900490, 5403965, 5758970, 6860686, 8050805, 10807930, 11271127, 16101610, 17151715, 22542254, 34303430, 56355635, 78897889, 112711270, 157795778, 394489445, 788978890]

約数ペア:

[(1, 788978890), (2, 394489445), (5, 157795778), (7, 112711270), (10, 78897889), (14, 56355635), (23, 34303430), (35, 22542254), (46, 17151715), (49, 16101610), (70, 11271127), (73, 10807930), (98, 8050805), (115, 6860686), (137, 5758970), (146, 5403965), (161, 4900490), (230, 3430343), (245, 3220322), (274, 2879485), (322, 2450245), (343, 2300230), (365, 2161586), (490, 1610161), (511, 1543990), (685, 1151794), (686, 1150115), (730, 1080793), (805, 980098), (959, 822710), (1022, 771995), (1127, 700070), (1370, 575897), (1610, 490049), (1679, 469910), (1715, 460046), (1918, 411355), (2254, 350035), (2555, 308798), (3151, 250390), (3358, 234955), (3430, 230023), (3577, 220570), (4795, 164542), (5110, 154399), (5635, 140014), (6302, 125195), (6713, 117530), (7154, 110285), (7889, 100010), (8395, 93982), (9590, 82271), (10001, 78890), (11270, 70007), (11753, 67130), (13426, 58765), (15755, 50078), (15778, 50005), (16790, 46991), (17885, 44114), (20002, 39445), (22057, 35770), (23506, 33565), (25039, 31510)]