12345440

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:196

約数の個数: 96

約数和(自身を含む): 31933440

約数和(自身を除く): 19588000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 76, 80, 95, 124, 131, 152, 155, 160, 190, 248, 262, 304, 310, 380, 496, 524, 589, 608, 620, 655, 760, 992, 1048, 1178, 1240, 1310, 1520, 2096, 2356, 2480, 2489, 2620, 2945, 3040, 4061, 4192, 4712, 4960, 4978, 5240, 5890, 8122, 9424, 9956, 10480, 11780, 12445, 16244, 18848, 19912, 20305, 20960, 23560, 24890, 32488, 39824, 40610, 47120, 49780, 64976, 77159, 79648, 81220, 94240, 99560, 129952, 154318, 162440, 199120, 308636, 324880, 385795, 398240, 617272, 649760, 771590, 1234544, 1543180, 2469088, 3086360, 6172720, 12345440]

約数ペア:

[(1, 12345440), (2, 6172720), (4, 3086360), (5, 2469088), (8, 1543180), (10, 1234544), (16, 771590), (19, 649760), (20, 617272), (31, 398240), (32, 385795), (38, 324880), (40, 308636), (62, 199120), (76, 162440), (80, 154318), (95, 129952), (124, 99560), (131, 94240), (152, 81220), (155, 79648), (160, 77159), (190, 64976), (248, 49780), (262, 47120), (304, 40610), (310, 39824), (380, 32488), (496, 24890), (524, 23560), (589, 20960), (608, 20305), (620, 19912), (655, 18848), (760, 16244), (992, 12445), (1048, 11780), (1178, 10480), (1240, 9956), (1310, 9424), (1520, 8122), (2096, 5890), (2356, 5240), (2480, 4978), (2489, 4960), (2620, 4712), (2945, 4192), (3040, 4061)]