19994940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2267}}^1$

素因数の和:2296

約数の個数: 108

約数和(自身を含む): 70584696

約数和(自身を除く): 50589756

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2267, 2940, 4410, 4534, 6801, 8820, 9068, 11335, 13602, 15869, 20403, 22670, 27204, 31738, 34005, 40806, 45340, 47607, 63476, 68010, 79345, 81612, 95214, 102015, 111083, 136020, 142821, 158690, 190428, 204030, 222166, 238035, 285642, 317380, 333249, 408060, 444332, 476070, 555415, 571284, 666498, 714105, 952140, 999747, 1110830, 1332996, 1428210, 1666245, 1999494, 2221660, 2856420, 3332490, 3998988, 4998735, 6664980, 9997470, 19994940]

約数ペア:

[(1, 19994940), (2, 9997470), (3, 6664980), (4, 4998735), (5, 3998988), (6, 3332490), (7, 2856420), (9, 2221660), (10, 1999494), (12, 1666245), (14, 1428210), (15, 1332996), (18, 1110830), (20, 999747), (21, 952140), (28, 714105), (30, 666498), (35, 571284), (36, 555415), (42, 476070), (45, 444332), (49, 408060), (60, 333249), (63, 317380), (70, 285642), (84, 238035), (90, 222166), (98, 204030), (105, 190428), (126, 158690), (140, 142821), (147, 136020), (180, 111083), (196, 102015), (210, 95214), (245, 81612), (252, 79345), (294, 68010), (315, 63476), (420, 47607), (441, 45340), (490, 40806), (588, 34005), (630, 31738), (735, 27204), (882, 22670), (980, 20403), (1260, 15869), (1470, 13602), (1764, 11335), (2205, 9068), (2267, 8820), (2940, 6801), (4410, 4534)]